Find the interval in which `f(x) = xsqrt(4ax-x^2), (alt0)` is decreasing

Find the intervals in which f(x)=x^(4)-4x^(3)+4x^(2)+15 is increasing or decreasing.

Find the intervals in which the function f(x)=(4x^(2)+1)/x is decreasing

Find the intervals in which f(x)=(4x^2+1)/x is increasing or decreasing.

Find the intervals in which f(x)=(4x^2+1)/x is increasing or decreasing.

Find the intervals in which f(x)=(4x^2+1)/x is increasing or decreasing.

Find the intervals in which the function f(x)=x^(x) (x gt 0) is decreasing.

Find the open interval in which f(x)= x^(1/x), x > 0 is decreasing.

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

Find the intervals for which f(x)=x^(4)-2x^(2) increasing or decreasing.

The function f(x)=xsqrt(ax-x^2), a lt 0