4. Curve Sketching
Look for; 1
points of discontinu ity e.g. y , x 0, y 0
x
1
asymptotes e.g. y x , x 0, y x
x
5. Curve Sketching
Look for; 1
points of discontinu ity e.g. y , x 0, y 0
x
1
asymptotes e.g. y x , x 0, y x
x
On the curve y f x
6. Curve Sketching
Look for; 1
points of discontinu ity e.g. y , x 0, y 0
x
1
asymptotes e.g. y x , x 0, y x
x
On the curve y f x
1 stationary points occur when f x 0
7. Curve Sketching
Look for; 1
points of discontinu ity e.g. y , x 0, y 0
x
1
asymptotes e.g. y x , x 0, y x
x
On the curve y f x
1 stationary points occur when f x 0
2 maximum turning point if f x 0, f x 0
8. Curve Sketching
Look for; 1
points of discontinu ity e.g. y , x 0, y 0
x
1
asymptotes e.g. y x , x 0, y x
x
On the curve y f x
1 stationary points occur when f x 0
2 maximum turning point if f x 0, f x 0
3 minimum turning point if f x 0, f x 0
9. Curve Sketching
Look for; 1
points of discontinu ity e.g. y , x 0, y 0
x
1
asymptotes e.g. y x , x 0, y x
x
On the curve y f x
1 stationary points occur when f x 0
2 maximum turning point if f x 0, f x 0
3 minimum turning point if f x 0, f x 0
4 point of inflection if f x 0 and there is a change in
concavity f x 0
10. Curve Sketching
Look for; 1
points of discontinu ity e.g. y , x 0, y 0
x
1
asymptotes e.g. y x , x 0, y x
x
On the curve y f x
1 stationary points occur when f x 0
2 maximum turning point if f x 0, f x 0
3 minimum turning point if f x 0, f x 0
4 point of inflection if f x 0 and there is a change in
concavity f x 0
A curve is;
11. Curve Sketching
Look for; 1
points of discontinu ity e.g. y , x 0, y 0
x
1
asymptotes e.g. y x , x 0, y x
x
On the curve y f x
1 stationary points occur when f x 0
2 maximum turning point if f x 0, f x 0
3 minimum turning point if f x 0, f x 0
4 point of inflection if f x 0 and there is a change in
concavity f x 0
A curve is; increasing if f x 0
12. Curve Sketching
Look for; 1
points of discontinu ity e.g. y , x 0, y 0
x
1
asymptotes e.g. y x , x 0, y x
x
On the curve y f x
1 stationary points occur when f x 0
2 maximum turning point if f x 0, f x 0
3 minimum turning point if f x 0, f x 0
4 point of inflection if f x 0 and there is a change in
concavity f x 0
A curve is; increasing if f x 0
decreasing if f x 0
13. Curve Sketching
Look for; 1
points of discontinu ity e.g. y , x 0, y 0
x
1
asymptotes e.g. y x , x 0, y x
x
On the curve y f x
1 stationary points occur when f x 0
2 maximum turning point if f x 0, f x 0
3 minimum turning point if f x 0, f x 0
4 point of inflection if f x 0 and there is a change in
concavity f x 0
A curve is; increasing if f x 0 concave up if f x 0
decreasing if f x 0
14. Curve Sketching
Look for; 1
points of discontinu ity e.g. y , x 0, y 0
x
1
asymptotes e.g. y x , x 0, y x
x
On the curve y f x
1 stationary points occur when f x 0
2 maximum turning point if f x 0, f x 0
3 minimum turning point if f x 0, f x 0
4 point of inflection if f x 0 and there is a change in
concavity f x 0
A curve is; increasing if f x 0 concave up if f x 0
decreasing if f x 0 concave down if f x 0
16. e.g. Sketch the curve y x 3 6 x 2 9 x 5
dy
3x 2 12 x 9
dx
17. e.g. Sketch the curve y x 3 6 x 2 9 x 5
dy
3x 2 12 x 9
dx
d2y
2
6 x 12
dx
18. e.g. Sketch the curve y x 3 6 x 2 9 x 5
dy
3x 2 12 x 9
dx
d2y
2
6 x 12
dx
d3y
3
6
dx
19. e.g. Sketch the curve y x 3 6 x 2 9 x 5
dy
3x 2 12 x 9
dx
d2y
2
6 x 12
dx
d3y
3
6
dx dy
Stationary points occur when 0
dx
20. e.g. Sketch the curve y x 3 6 x 2 9 x 5
dy
3x 2 12 x 9
dx
d2y
2
6 x 12
dx
d3y
3
6
dx dy
Stationary points occur when 0
dx
i.e. 3x 2 12 x 9 0
21. e.g. Sketch the curve y x 3 6 x 2 9 x 5
dy
3x 2 12 x 9
dx
d2y
2
6 x 12
dx
d3y
3
6
dx dy
Stationary points occur when 0
dx
i.e. 3x 2 12 x 9 0
x2 4x 3 0
x 1 x 3 0
22. e.g. Sketch the curve y x 3 6 x 2 9 x 5
dy
3x 2 12 x 9
dx
d2y
2
6 x 12
dx
d3y
3
6
dx dy
Stationary points occur when 0
dx
i.e. 3x 2 12 x 9 0
x2 4x 3 0
x 1 x 3 0
x 1 or x 3
23. e.g. Sketch the curve y x 3 6 x 2 9 x 5
dy
3x 2 12 x 9
dx
d2y
2
6 x 12
dx
d3y
3
6
dx dy
Stationary points occur when 0
dx
i.e. 3x 2 12 x 9 0
x2 4x 3 0
x 1 x 3 0
2
x 1 or x 3
d y
when x 1, 2 61 12
dx
6 0
24. e.g. Sketch the curve y x 3 6 x 2 9 x 5
dy
3x 2 12 x 9
dx
d2y
2
6 x 12
dx
d3y
3
6
dx dy
Stationary points occur when 0
dx
i.e. 3x 2 12 x 9 0
x2 4x 3 0
x 1 x 3 0
2
x 1 or x 3
d y
when x 1, 2 61 12
dx
6 0
1, 1 is a maximum turning point
26. d2y
when x 3, 2 63 12
dx
60
3, 5 is a minimum turning point
27. d2y
when x 3, 2 63 12
dx
60
3, 5 is a minimum turning point
d2y
Possible points of inflection occur when 2 0
dx
28. d2y
when x 3, 2 63 12
dx
60
3, 5 is a minimum turning point
d2y
Possible points of inflection occur when 2 0
dx
i.e. 6 x 12 0
29. d2y
when x 3, 2 63 12
dx
60
3, 5 is a minimum turning point
d2y
Possible points of inflection occur when 2 0
dx
i.e. 6 x 12 0
x2
30. d2y
when x 3, 2 63 12
dx
60
3, 5 is a minimum turning point
d2y
Possible points of inflection occur when 2 0
dx
i.e. 6 x 12 0
x2
d3y
when x 2, 3 6 0
dx
31. d2y
when x 3, 2 63 12
dx
60
3, 5 is a minimum turning point
d2y
Possible points of inflection occur when 2 0
dx
i.e. 6 x 12 0
x2
d3y
when x 2, 3 6 0
dx
2, 3 is a point of inflection