Find the intervals in which the function `f(x)=x^3-12x^2+36x+117` is increasing

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

Find the intervals in which the function f(x)=x^(3)-12x^(2)+36x+17 is (a) increasing,(b) decreasing.

Find the interval in which the function f(x)=2x^(3)-21x^(2)+36x-40 is increasing or decreasing.

Find the intervals in which the function f(x)=2x^(3)-9x^(2)+12x+15 is increasing and decreasing.

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

Find the intervals in which the function f(x)=2x^(3)+9x^(2)+12x+20 is increasing and decreasing.

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

Find the intervals in which the function f(x)=2x^(3) + 9x^2 + 12x + 20 is increasing

Find the intervals in which the function f(x) = 2x^(3)-15x^(2)+36x + 6 is (i) increasing, (ii) decreasing.

Find the intervals in which the function f(x) = 2x^(3)-15x^(2)+36x + 6 is (i) increasing, (ii) decreasing.