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(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)=3x^(4)-4x^(3)-12x^(2)+5 is (a) strictly increasing (b) strictly decreasing

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 intervals in which the function f given by f(x)=x^(2)-4x+6 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 on which the function f(x) = 10 - 6x - 2x^(2) 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

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 on which the function f(x) = 6 - 9x - x^(2) is (a) strictly increasing (b) strictly decreasing

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