find intervals in which function `x^3+2x^2-1` is increasing and decreasing?

Find the intervals in which the function f(x)=2x^3-24x+25 is increasing or decreasing.

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

Find the intervals in which the function is increasing or decreasing: f(x) = log(1+x) - (2x)/(2+x)

find the intervals in which the function y=2x^(3)-9x^(2)+12x+6 is increasing and intervals in which it decreasing

Find the intervals in which the function is (a) increasing, (b) decreasing: f(x) = (x + 1)^(3) (x - 3)^(3) .

Find the intervals in which f(x)=2x^3-15 x^2+36 x+1 is increasing or decreasing.

Find the intervals in which the function f(X) = (x-1)^3(x-2)^2 is increasing or decreasing.

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

Find the intervals in which the function f(x)=x^2+2x-5 strictly increasing or decreasing.

Find the intervals in which f(x)=2x^(3)-15x^(2)+36x+1 is increasing or decreasing.