Find the intervals in which the function `f(x)=3x^4-4x^3-12 x^2+5` is (a) strictly increasing (b) strictly decreasing

Find the intervals in which the function f(x)=3x^(4)-4x^(3)-12x^(2)+5 is (a) strictly increasing (b) strictly decreasing

Find the intervals in which the function f(x)=3/2x^4-4x^3-45 x^2+51 is (a) strictly increasing. (b) strictly decreasing.

Find the intervals in which the function f(x)=x^4/4-x^3-5x^2+24x+12 is (a) strictly increasing (b) strictly decreasing

Find the interval in which the function f(x) = 3x^(4) - 4x^(3) -12x^(2) + 5 is strictly increasing

Find the intervals in which the function f(x)=(3)/(2)x^(4)-4x-45x+51 is (a) strictly increasing.(b) strictly decreasing.

Find the interval in which the function f(x) = 3x^4- 4x^3- 12x^2+ 5 is strictly increasing.

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

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

Find the intervals in which the function f(x)=(x^(4))/(4)-x^(3)-5x^(2)+24x+12 is (a) strictly increasing (b) strictly decreasing

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