24. Find the intervals in which the following function is (a) increasing and (b) decreasing `f(x)=2x^3+9x^2+12x-1`

Find the intervals in which the following functions are (a) increasing (b) decreasing : f(x)=x^(3)-6x^(2)+9x+15

Find the intervals in which the follwing functions are increasing or decreasing f(x)=-3x^2+12x+8

Find the intervals in which the following functions are (a) increasing (b) decreasing : f(x)=x^(3)-12 x^(2)+36x+17

Find the intervals in which the following functions are (a) increasing (b) decreasing : f(x)=2x^(3)-15x^(2)+36x+1

Find the intervals on which each of the following functions is (a) increasing (b) decreasing f(x) = 2x^(3) + 9x^(2) + 12x + 15

Find the intervals in which the following functions are increasing or decreasing : 2x^3 - 9x^2 + 12 x - 5

Find the intervals in which the following functions are (a) increasing (b) decreasing : f(x)=4-9x+6x^(2)-x^(3)

Find the intervals in which the following functions is increasing or decreasing. f(x) = - 2x^(3) - 9x^(2) - 12x + 1

Find the intervals on which each of the following functions is (a) increasing (b) decreasing f(x) = (x^(3) - 6x^(2) + 9x + 10)

Find the intervals in which the following functions are increasing or decreasing : x^3 - 9x^2 + 15 x + 11