The document discusses double integrals over polar equations and cylindrical coordinates. It explains that a double integral over a region D defined in polar coordinates by r1(θ) and r2(θ), where r1 < r2 and A < θ < B, can be evaluated as an integral of an integrand function f(r,θ) over the region D in terms of drdθ. It also introduces the cylindrical coordinate system, which uses polar coordinates for points in the xy-plane and z as the third coordinate, and provides examples of converting between rectangular and cylindrical coordinates and sketching curves defined by constant r and θ values.
This presentation is about electromagnetic fields, history of this theory and personalities contributing to this theory. Applications of electromagnetism. Vector Analysis and coordinate systems.
Comprehensive coverage of fundamentals of computer graphics.
3D Transformations
Reflections
3D Display methods
3D Object Representation
Polygon surfaces
Quadratic Surfaces
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
More Related Content
Similar to 23 Double Integral over Polar Coordinate.pptx
This presentation is about electromagnetic fields, history of this theory and personalities contributing to this theory. Applications of electromagnetism. Vector Analysis and coordinate systems.
Comprehensive coverage of fundamentals of computer graphics.
3D Transformations
Reflections
3D Display methods
3D Object Representation
Polygon surfaces
Quadratic Surfaces
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
2. Double Integrals Over Polar Equations
* Double Integrals Over Regions Defined
in Polar Coordinates
* The Cylindrical Coordinates
3. Given a domain D defined by r1() and r2() where
r1 < r2 and A < < B as shown in the figure,
D = {(r, )| r1 < r < r2, A < < B}.
Double Integrals Over Polar Equations
Y
Z
A
B
X
D
r2()
r1()
4. Double Integrals Over Polar Equations
Y
Z
A
B
X
Partition the xy-plane
with Δr and Δ.
D
r2()
r1()
Given a domain D defined by r1() and r2() where
r1 < r2 and A < < B as shown in the figure,
D = {(r, )| r1 < r < r2, A < < B}.
5. …
Double Integrals Over Polar Equations
Partition the xy-plane
with Δr and Δ.
Given a domain D defined by r1() and r2() where
r1 < r2 and A < < B as shown in the figure,
D = {(r, )| r1 < r < r2, A < < B}.
Y
Z
A
B
X
D
r2()
r1()
6. …
Δr
Double Integrals Over Polar Equations
Partition the xy-plane
with Δr and Δ.
Given a domain D defined by r1() and r2() where
r1 < r2 and A < < B as shown in the figure,
D = {(r, )| r1 < r < r2, A < < B}.
Y
Z
A
B
X
D
r2()
r1()
7. …
Δ
Δr
Double Integrals Over Polar Equations
Partition the xy-plane
with Δr and Δ.
Given a domain D defined by r1() and r2() where
r1 < r2 and A < < B as shown in the figure,
D = {(r, )| r1 < r < r2, A < < B}.
Y
Z
A
B
X
D
r2()
r1()
8. arbitrary ΔrΔ–tile as shown and let (r*, *) be an
arbitrary point in the tile and Δ A be area of the tile,
then ΔA ≈ r*ΔrΔ.
…
Δ
Δr
(r*, *)
r*
Double Integrals Over Polar Equations
Partition the xy-plane
with Δr and Δ. Select an
Given a domain D defined by r1() and r2() where
r1 < r2 and A < < B as shown in the figure,
D = {(r, )| r1 < r < r2, A < < B}.
Y
Z
A
B
X
D
r2()
r1()
9. arbitrary ΔrΔ–tile as shown and let (r*, *) be an
arbitrary point in the tile and Δ A be area of the tile,
then ΔA ≈ r*ΔrΔ.
(HW. Why? In fact ΔA = r*ΔrΔ if r*is the center.)
…
Δ
Δr
(r*, *)
r*
Double Integrals Over Polar Equations
Partition the xy-plane
with Δr and Δ. Select an
Given a domain D defined by r1() and r2() where
r1 < r2 and A < < B as shown in the figure,
D = {(r, )| r1 < r < r2, A < < B}.
Y
Z
A
B
X
D
r2()
r1()
10. Double Integrals Over Polar Equations
Let z = f(r, ) ≥ 0 be a function over D.
Y
Z
A
B
X
z = f(r, )
D
r2()
r1()
11. The volume of the column over
one tile having z as the cover is
ΔV ≈ f(r*, *) r*ΔrΔ.
Double Integrals Over Polar Equations
Y
A
B
X
Let z = f(r, ) ≥ 0 be a function over D.
D
Z
z = f(r, )
r2()
r1()
12. The volume of the column over
one tile having z as the cover is
ΔV ≈ f(r*, *) r*ΔrΔ.
lim Σ(ΔV)
Δr,Δ0
Double Integrals Over Polar Equations
Y
A
B
X
Let z = f(r, ) ≥ 0 be a function over D.
D
Z
Hence the volume V over D is
the sum of all
z = f(r, )
r2()
r1()
13. The volume of the column over
one tile having z as the cover is
ΔV ≈ f(r*, *) r*ΔrΔ.
lim Σ(ΔV) = lim Σf(r*, *)r*ΔrΔ
= ∫∫f(r, )dA.
Δr,Δ0 Δr,Δ0
ΔA
Double Integrals Over Polar Equations
Y
A
B
X
Let z = f(r, ) ≥ 0 be a function over D.
D
D
Z
Hence the volume V over D is
the sum of all
z = f(r, )
r2()
r1()
14. The volume of the column over
one tile having z as the cover is
ΔV ≈ f(r*, *) r*ΔrΔ.
lim Σ(ΔV) = lim Σf(r*, *)r*ΔrΔ
= ∫∫f(r, )dA.
Δr,Δ0 Δr,Δ0
∫ ∫ f(r, ) rdrd, which is V,
r=r1()
r2()
=A
B
ΔA
Double Integrals Over Polar Equations
Y
A
B
X
Let z = f(r, ) ≥ 0 be a function over D.
D
D
Z
Hence the volume V over D is
the sum of all
z = f(r, )
in term of drd, we have
r2()
r1()
∫∫f(r, )dA =
D
15. The volume of the column over
one tile having z as the cover is
ΔV ≈ f(r*, *) r*ΔrΔ.
lim Σ(ΔV) = lim Σf(r*, *)r*ΔrΔ
= ∫∫f(r, )dA.
Δr,Δ0 Δr,Δ0
∫ ∫ f(r, ) rdrd, which is V,
r=r1()
r2()
=A
B
ΔA
Double Integrals Over Polar Equations
Y
A
B
X
Let z = f(r, ) ≥ 0 be a function over D.
D
D
Z
Hence the volume V over D is
the sum of all
z = f(r, )
in term of drd, we have
= volume of the solid over D = {A < <B; r1 < r < r2}.
r2()
r1()
∫∫f(r, )dA =
D
16. Cylindrical Coordinates
The cylindrical coordinate system is the combination
of using polar coordinates for points in the xy–plane
with z as the 3rd coordinate.
17. Example A. a. Plot the point (3,120o, 4)
in cylindrical coordinate. Convert it to
rectangular coordinate.
Cylindrical Coordinates
The cylindrical coordinate system is the combination
of using polar coordinates for points in the xy–plane
with z as the 3rd coordinate.
18. Example A. a. Plot the point (3,120o, 4)
in cylindrical coordinate. Convert it to
rectangular coordinate.
3
120o
x
y
z
Cylindrical Coordinates
The cylindrical coordinate system is the combination
of using polar coordinates for points in the xy–plane
with z as the 3rd coordinate.
19. Example A. a. Plot the point (3,120o, 4)
in cylindrical coordinate. Convert it to
rectangular coordinate.
3
120o
4
x
y
z
(3, 120o, 4)
Cylindrical Coordinates
The cylindrical coordinate system is the combination
of using polar coordinates for points in the xy–plane
with z as the 3rd coordinate.
20. Example A. a. Plot the point (3,120o, 4)
in cylindrical coordinate. Convert it to
rectangular coordinate.
3
120o
4
x
y
z
(3, 120o, 4)
x = 3cos(120o) = –3/2
y = 3sin(120o) = 3
Hence the point is (–3/2, 3, 4)
Cylindrical Coordinates
The cylindrical coordinate system is the combination
of using polar coordinates for points in the xy–plane
with z as the 3rd coordinate.
21. Example A. a. Plot the point (3,120o, 4)
in cylindrical coordinate. Convert it to
rectangular coordinate.
3
120o
4
x
y
z
(3, 120o, 4)
x = 3cos(120o) = –3/2
y = 3sin(120o) = 3
Hence the point is (–3/2, 3, 4)
b. Convert (3, –3, 1) into to
cylindrical coordinate.
Cylindrical Coordinates
The cylindrical coordinate system is the combination
of using polar coordinates for points in the xy–plane
with z as the 3rd coordinate.
22. Example A. a. Plot the point (3,120o, 4)
in cylindrical coordinate. Convert it to
rectangular coordinate.
3
120o
4
x
y
z
(3, 120o, 4)
x = 3cos(120o) = –3/2
y = 3sin(120o) = 3
Hence the point is (–3/2, 3, 4)
b. Convert (3, –3, 1) into to
cylindrical coordinate.
Cylindrical Coordinates
The cylindrical coordinate system is the combination
of using polar coordinates for points in the xy–plane
with z as the 3rd coordinate.
23. Example A. a. Plot the point (3,120o, 4)
in cylindrical coordinate. Convert it to
rectangular coordinate.
3
120o
4
x
y
z
(3, 120o, 4)
x = 3cos(120o) = –3/2
y = 3sin(120o) = 3
Hence the point is (–3/2, 3, 4)
b. Convert (3, –3, 1) into to
cylindrical coordinate.
= 315o, r = 9 + 9 = 18
Hence the point is (18, 315o, 1)
the cylindrical coordinate.
Cylindrical Coordinates
The cylindrical coordinate system is the combination
of using polar coordinates for points in the xy–plane
with z as the 3rd coordinate.
24. Example A. a. Plot the point (3,120o, 4)
in cylindrical coordinate. Convert it to
rectangular coordinate.
3
120o
4
x
y
z
(3, 120o, 4)
x = 3cos(120o) = –3/2
y = 3sin(120o) = 3
Hence the point is (–3/2, 3, 4)
b. Convert (3, –3, 1) into to
cylindrical coordinate.
(18, 315o, 0)
= 315o, r = 9 + 9 = 18
Hence the point is (18, 315o, 1)
the cylindrical coordinate. x
y
Cylindrical Coordinates
z
The cylindrical coordinate system is the combination
of using polar coordinates for points in the xy–plane
with z as the 3rd coordinate.
25. Example A. a. Plot the point (3,120o, 4)
in cylindrical coordinate. Convert it to
rectangular coordinate.
3
120o
4
x
y
z
(3, 120o, 4)
x = 3cos(120o) = –3/2
y = 3sin(120o) = 3
Hence the point is (–3/2, 3, 4)
b. Convert (3, –3, 1) into to
cylindrical coordinate.
(18, 315o, 0)
= 315o, r = 9 + 9 = 18
Hence the point is (18, 315o, 1)
the cylindrical coordinate. x
y
Cylindrical Coordinates
z
(18, 315o, 1) = (3, –3, 1)
1
The cylindrical coordinate system is the combination
of using polar coordinates for points in the xy–plane
with z as the 3rd coordinate.
27. The constant equations
r = k describes cylinders
of radius k, thus the name
"cylindrical coordinate".
Example B. a. Sketch r = 2
2
Cylindrical Coordinates
x
y
z
28. The constant equations
r = k describes cylinders
of radius k, thus the name
"cylindrical coordinate".
x
y
Example B. a. Sketch r = 2
2
The constant equations
= k describes the
vertical plane through the
origin, at the angle k with
x-axis.
b. Sketch θ = 3π/4
3π/4
Cylindrical Coordinates
z
x
y
z
29. The constant equations
r = k describes cylinders
of radius k, thus the name
"cylindrical coordinate".
x
y
Example B. a. Sketch r = 2
2
The constant equations
= k describes the
vertical plane through the
origin, at the angle k with
x-axis.
b. Sketch θ = 3π/4
3π/4
Cylindrical Coordinates
z
x
y
z
30. Cylindrical Coordinates
Graphs may be given in the cylindrical coordinate
using polar coordinates for points in the domain in the
xy–plane and z = f(r, ). Here are some examples of
cylindrical graphs.
31. Cylindrical Coordinates
Graphs may be given in the cylindrical coordinate
using polar coordinates for points in the domain in the
xy–plane and z = f(r, ). Here are some examples of
cylindrical graphs.
Example C. a. z = sin(r),
D = {0 ≤ r ≤ π, 0 ≤ ≤ 2π}
→ 0 ≤ z ≤ 1
32. Cylindrical Coordinates
Graphs may be given in the cylindrical coordinate
using polar coordinates for points in the domain in the
xy–plane and z = f(r, ). Here are some examples of
cylindrical graphs.
Example C. a. z = sin(r),
D = {0 ≤ r ≤ π, 0 ≤ ≤ 2π}
→ 0 ≤ z ≤ 1
y
z = sin(r)
x (π, 0, 1)
33. Cylindrical Coordinates
Graphs may be given in the cylindrical coordinate
using polar coordinates for points in the domain in the
xy–plane and z = f(r, ). Here are some examples of
cylindrical graphs.
Example C. a. z = sin(r),
D = {0 ≤ r ≤ π, 0 ≤ ≤ 2π}
→ 0 ≤ z ≤ 1
y
z = sin(r)
b. z = sin(r),
D = {0 ≤ r ≤ π, 0 ≤ ≤ 2π}
→ 0 ≤ z ≤ 2 π
x (π, 0, 1)
34. Cylindrical Coordinates
Example C. a. z = sin(r),
D = {0 ≤ r ≤ π, 0 ≤ ≤ 2π}
→ 0 ≤ z ≤ 1
x
y
z = sin(r)
x y
z = sin(r)
b. z = sin(r),
D = {0 ≤ r ≤ π, 0 ≤ ≤ 2π}
→ 0 ≤ z ≤ 2 π
(π/2, 2π, 2π)p
(π, 0, 1)
Graphs may be given in the cylindrical coordinate
using polar coordinates for points in the domain in the
xy–plane and z = f(r, ). Here are some examples of
cylindrical graphs.
35. Double Integrals Over Polar Equations
D D
Let’s set up the volume calculation for both solids.
I II
36. Double Integrals Over Polar Equations
The base D
D D
r = π
Let’s set up the volume calculation for both solids.
We note that D = {0 ≤ r ≤ π, 0 ≤ ≤ 2π}.
I II
37. ∫ ∫ f(r, ) rdrd
r=r1()
r2()
=A
B
Double Integrals Over Polar Equations
Vol(I) =
The base D
D D
r = π
Let’s set up the volume calculation for both solids.
We note that D = {0 ≤ r ≤ π, 0 ≤ ≤ 2π}. Using the
formula
I II
V =
Vol(II) =
, their volumes are
38. ∫ ∫ f(r, ) rdrd
r=r1()
r2()
=A
B
Double Integrals Over Polar Equations
Vol(I) =
The base D
D D
r = π
Let’s set up the volume calculation for both solids.
We note that D = {0 ≤ r ≤ π, 0 ≤ ≤ 2π}. Using the
formula
I II
V =
∫ ∫ sin(r) r drd,
r=0
π
=0
2π
Vol(II) =
, their volumes are
39. ∫ ∫ f(r, ) rdrd
r=r1()
r2()
=A
B
Double Integrals Over Polar Equations
Vol(I) =
The base D
D D
r = π
Let’s set up the volume calculation for both solids.
We note that D = {0 ≤ r ≤ π, 0 ≤ ≤ 2π}. Using the
formula
I II
V =
∫ ∫ sin(r) r drd,
r=0
π
=0
2π
Vol(II) = ∫ ∫ sin(r) r drd. (HW: Finish the problems.)
r=0
π
=0
2π
, their volumes are
40. Example D. Let z = f(r, ) = cos() over the domain
D = {(r, )| 0 < r < sin(), 0 ≤ ≤ π/2}.
Find the volume of the solid defined by z over D.
Double Integrals Over Polar Equations
x
41. Example D. Let z = f(r, ) = cos() over the domain
D = {(r, )| 0 < r < sin(), 0 ≤ ≤ π/2}.
Find the volume of the solid defined by z over D.
Double Integrals Over Polar Equations
1
D
r=sin()
The domain D = {0 < r < sin(), 0 ≤ ≤ π/2}
is the right half of a circle as shown.
x
42. Example D. Let z = f(r, ) = cos() over the domain
D = {(r, )| 0 < r < sin(), 0 ≤ ≤ π/2}.
Find the volume of the solid defined by z over D.
Double Integrals Over Polar Equations
1
D
r=sin()
The domain D = {0 < r < sin(), 0 ≤ ≤ π/2}
is the right half of a circle as shown.
The surface z = cos() makes a 90o twist and
the solid with base D below z are shown here. x
y
x
z = f(r, ) = cos()
D
(r, 0, 1)
43. Example D. Let z = f(r, ) = cos() over the domain
D = {(r, )| 0 < r < sin(), 0 ≤ ≤ π/2}.
Find the volume of the solid defined by z over D.
Double Integrals Over Polar Equations
1
D
r=sin()
The domain D = {0 < r < sin(), 0 ≤ ≤ π/2}
is the right half of a circle as shown.
The surface z = cos() makes a 90o twist and
the solid with base D below z are shown here. x
y
x
x
z = f(r, ) = cos()
D
D
y
(r, 0, 1)
(r, 0, 1)
44. = ∫ ∫ cos()r drd
r=0
=0
Convert the integral to iterated integral, we get
∫∫cos()dA
D
r=sin()
π/2
= ∫ cos()r2/2 | d
r=0
=0
π/2 sin()
= ½ ∫ cos()sin2()d
=0
π/2
Change variable,
set u = sin().
= sin3()/6 | =1/6
=0
π/2
Double Integrals Over Polar Equations
y
x
x
z = f(r, ) = cos()
D
D
y
(r, 0, 1)
(r, 0, 1)
1
D
r=sin()
x
45. Example E. Evaluate
by converting it into polar integral
Double Integrals Over Polar Equations
∫ ∫ (x2 + y2)3/2 dydx
y= -4 – x2
-2
2 y= 4 – x2
46. Example E. Evaluate
by converting it into polar integral
The domain D is:
r=2
Double Integrals Over Polar Equations
∫ ∫ (x2 + y2)3/2 dydx
y= -4 – x2
-2
2 y= 4 – x2
47. Example E. Evaluate
by converting it into polar integral
The domain D is:
r=2
Its defined by the polar
equation r = 2 & r=0
Double Integrals Over Polar Equations
∫ ∫ (x2 + y2)3/2 dydx
y= -4 – x2
-2
2 y= 4 – x2
48. Example E. Evaluate
by converting it into polar integral
The domain D is: (x2 + y2)3/2 = (r2)3/2 = r3 in polar
form.
r=2
Its defined by the polar
equation r = 2 & r=0
Double Integrals Over Polar Equations
∫ ∫ (x2 + y2)3/2 dydx
y= -4 – x2
-2
2 y= 4 – x2
49. Example E. Evaluate
by converting it into polar integral
The domain D is: (x2 + y2)3/2 = (r2)3/2 = r3 in polar
form. Hence the integral is
r=2
Its defined by the polar
equation r = 2 & r=0
∫ ∫ r3 * rdrd
r= 0
0
2π r= 2
Double Integrals Over Polar Equations
∫ ∫ (x2 + y2)3/2 dydx
y= -4 – x2
-2
2 y= 4 – x2
50. Example E. Evaluate
by converting it into polar integral
The domain D is: (x2 + y2)3/2 = (r2)3/2 = r3 in polar
form. Hence the integral is
r=2
Its defined by the polar
equation r = 2 & r=0
∫ ∫ r3 * rdrd
r= 0
0
2π r= 2
∫ r5/5 | d
r= 0
0
2π
r= 2
=
Double Integrals Over Polar Equations
∫ ∫ (x2 + y2)3/2 dydx
y= -4 – x2
-2
2 y= 4 – x2
51. Example E. Evaluate
by converting it into polar integral
The domain D is: (x2 + y2)3/2 = (r2)3/2 = r3 in polar
form. Hence the integral is
r=2
Its defined by the polar
equation r = 2 & r=0
∫ ∫ r3 * rdrd
r= 0
0
2π r= 2
∫ r5/5 | d
r= 0
0
2π
r= 2
=
∫ 32/5 d
0
2π
=
Double Integrals Over Polar Equations
∫ ∫ (x2 + y2)3/2 dydx
y= -4 – x2
-2
2 y= 4 – x2
52. Example E. Evaluate
by converting it into polar integral
The domain D is: (x2 + y2)3/2 = (r2)3/2 = r3 in polar
form. Hence the integral is
∫ ∫ (x2 + y2)3/2 dydx
y= -4 – x2
-2
2 y= 4 – x2
r=2
Its defined by the polar
equation r = 2 & r=0
∫ ∫ r3 * rdrd
r= 0
0
2π r= 2
∫ r5/5 | d
r= 0
0
2π
r= 2
=
∫ 32/5 d
0
2π
=
= 64π/5
Double Integrals Over Polar Equations
53. For more integration examples of changing from
dxdy form to the polar rdrdr –form may be found at
the following link:
Double Integrals Over Polar Equations
http://ltcconline.net/greenl/courses/202/multipleIntegration/
doublePolarIntegration.htm