[" Determine for what value of "x" ,the function "f(x)=x^(3)+(1)/(x^(3))(x!=0)" is "],[" strictly increasing or decreasing."]

Determine for what values of x, the function f(x)=x^(3)+(1)/(x^(3))(x!=0) is strictly increasing or strictly decreasing.

Determine for which values of 'x' the function f(x) = x^3 - 24x + 7 is strictly increasing or strictly decreasing.

Determine the interval in which the function f(x) = 2x^(3) - 15x^(2) + 36 x + 1 is strictly increasing and strictly decreasing.

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

Find the intervals in which the functions: f(x) =x^3 + 2x^2 - 1 is strictly increasing and decreasing

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