Upcoming SlideShare
×

# Polynomials1

219 views

Published on

Published in: Education, Technology, Design
0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

• Be the first to like this

Views
Total views
219
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
2
0
Likes
0
Embeds 0
No embeds

No notes for slide

### Polynomials1

2. 2. Take this expression 2x2 – 3x + 5 Here 2x2 , 3x, 5 are called as ‘terms’. When we add or subtract terms, it is called a polynomial.
3. 3. 2x2 – 3√x + 5 Let us check on few expressions… 3y2 – 2y + 4 Is this a polynomial? Yes..it is a proper combo of y terms and number terms Is this a polynomial? No..it is not a polynomial as x is in roots 2x3 – 3 + 4 x Is this a polynomial? No..it is not a polynomial as x becomes x -1 when taken to the numerator.
4. 4. So, what is not a polynomial? Any polynomial expression with • Roots in the x terms, eg:- 5√x • Negative powers in the x term, eg:- x-2 • x term in the denominator, eg :- 1 x ARE “NOT POLYNOMIALS”
5. 5. Now let us see whether you are able to figure out whether an expression is a polynomial or not.. Go on to the next page..
6. 6. Is this a polynomial? 3x – 2
7. 7. Next one…Is this a polynomial.. 2x2 – 3√x + 5
9. 9. Check this out.. 4x3 + 2x2 – 3x + 1
10. 10. Let us now check out the degree of a polynomial
11. 11. Check this expression 4x3 + 2x2 – 3x + 1 Can you see the powers of x ? 4x3 has the power of x as 3 2x2 has the power of x as 2 3x has the power of x as 1 Here The highest power of x is 3. Hence, 3 is the degree of the polynomial
12. 12. The highest power of x or y or z in a polynomial is called the degree of the polynomial. 4x3 + 2x2 – 3x + 1
13. 13. Try to figure out the degrees of the polynomial… 3x + 1 2y2 – 2y + 7 5x3 – 3x2 + x – 1 9u3 – 2u4 + u2 – 1 Degree 1 Degree 3 Degree 2 Degree 3 What 3? No..See properly..The highest degree is 4..Just to check whether you are reading smart..
14. 14. After having seen the degrees of a polynomial, let us see how to classify them according to their degree 3x + 1 Constant Polynomial Linear Polynomial Quadratic Polynomial Cubic Polynomial Eg: - 7 8 3 – x2 4x3 + 2x - 1 If the degree of x is zero or if there is no x term, then it is a constant polynomial If the degree of x is 1, then it is a linear polynomial If the degree of x is 2, then it is a quadratic polynomial If the degree of x is 3, then it is a cubic polynomial
15. 15. Let us try to figure out the polynomial types according to their degrees….Ready?
16. 16. Click the correct polynomial type.. 3-x2
17. 17. Click the correct polynomial type.. 3-x2
18. 18. Click the correct polynomial type.. 3-x2
19. 19. Click the correct polynomial type.. 3-x2
20. 20. Click the correct polynomial type.. 3-x2
21. 21. Click the correct polynomial type.. √3x2 - 4/3x + ½
22. 22. Click the correct polynomial type.. 2/3u - 5/2
23. 23. Click the correct polynomial type.. 9/5x3 – 2x2 + 7/3x – 1/5
24. 24. Click the correct polynomial type.. 2y3 + 5y – 7
25. 25. Click the correct polynomial type.. -3/2
26. 26. Click the correct polynomial type.. 4x – 3
27. 27. Click the correct polynomial type.. 3y
28. 28. Click the correct polynomial type.. 4x – 3
29. 29. Click the correct polynomial type.. 3-x2
30. 30. 3-x2 √3x2 - 4/3x + ½ 2/3u - 5/2 9/5x3 – 2x2 + 7/3x – 1/5 2y4 + 3 2y3 + 5y – 7 3y 2y2 – 3 4x – 3 -3/2 Quadratic Quadratic Quadratic Linear Linear Linear Cubic Cubic Constant Bi quadratic
31. 31. Linear polynomial 3x + 2 ax + b Quadratic polynomial 3x2 + 2x + 5 ax2 + bx + c Cubic polynomial 2y3 + 3x2 + 4x + 5 ax3 + bx2 + cx + d
32. 32. Graph of a polynomial
33. 33. Y X Y’ X’ ax 2 + bx + c Zeroes of the polynomial Number of zeroes - 2
34. 34. Find the number of zeroes
35. 35. Y X Y’ X’
36. 36. Y X Y’ X’
37. 37. Y X Y’ X’
38. 38. Y X Y’ X’
39. 39. Y X Y’ X’
40. 40. Y X Y’ X’
41. 41. Y X Y’ X’
42. 42. Y X Y’ X’
43. 43. Y X Y’ X’
44. 44. Y X Y’ X’
45. 45. Y X Y’ X’
46. 46. Y X Y’ X’
47. 47. Y X Y’ X’
48. 48. Y X Y’ X’
49. 49. Y X Y’ X’
50. 50. Y X Y’ X’
51. 51. Y X Y’ X’
52. 52. Y X Y’ X’