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 are (a)increasing (b)decreasing f(x)=x^2-6x+7

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 following functions are: (i) increasing .(ii)decreasing f(x) = 2x^(2)-6x

Find the intervals in which the following functions are increasing or decreasing f(x)=6x^2-14x

Find the intervals in which the following functions are increasing or decreasing f(x)=3x^2-4x

Find the intervals in which the following function are increasing or decreasing. f(x)=10-6x-2x^2

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 strictly increasing or decreasing : f(x)=2x^(3)-9x^(2)-12x+15

Find the intervals in which the following functions are strictly increasing or decreasing: 6-9x-x^2

Find the intervals in which the following functions are increasing or decreasing : x^3 - 6x^2 + 9x + 15