Find the interval in which
`f(x)=x^(3)-3x^(2)-9x+20` is strictly increasing or strictly decreasing.

Find the interval in which f(x)=2x^(3)+3x^(2)-12x+1 is increasing.

Find the intervals in which the function f given by f(x) = 2x^(3) - 3x^(2) - 36x + 7 is (a) strictly increasing (b) strictly decreasing?

Find the intervals in which the functions f given by f(x) = 4x^(3) - 6x^(2) - 72x + 30 is (a) strictly increasing (b) strictly decreasing.

Find the intervals in which the function f given by f(x) = 2x^(2) - 3x is (a) strictly increasing (b) strictly decreasing.

Find the intervals in which the function f given by f(x) = x^(2) - 4x + 6 is (a) strictly increasing (b) strictly decreasing.

Find the interval in which the function f given by f(x)=2x^(2)-3x is strictly increasing.

THe interval in which the function f(x) = x^(3) - 6x^(2) + 9x + 10 is increasing in

Find the interval in which the function f given f(x) = 2x^2 - 3x is stricitly increasing

Find the interval in which the following f is given by f(x) =2x^3 - 3x^2 -36 x+7 is I. strictly increasing II. Strictly decreasing