Make a sign diagram for the first derivative. b. Make a sign diagram for the second derivative. c. Sketch the graph by hand, showing all relative extreme points and inflection points.

7. f(x)= x^3+3x^2-9x+5

8. f(x)= x^3-3x^2-9x+7

9. f(x)= x^3-3x^2+3x+4

10. f(x)= x^3+3x^2+3x+6

11. f(x)= x^4-8x^3+18x^2+2

12. f(x)= x^4+8x^3+18x^2+8

13. f(x)= x^4+4x3+15

15. f(x)= 5x^4-x^5

17.f(x)= (2x+4)^5

19.f(x)= x(x-3)^2

14. f(x)= 2x^4-8x^3+30

16. f(x)= (x-2)^3+2

18. f(x)= (3x-6)^6+1