Find the intervals in which `f(x)=log(1+x)-x/(1+x)` is increasing or decreasing.

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

f : R^(+)to R^(+), f(x)=(log x)/(sqrt(x)) . Find the intervals in which f(x) is increasing or decreasing.

Let f(x)=sin^(-1)((2phi(x))/(1+phi^(2)(x))) . Find the interval in which f(x) is increasing or decreasing.

Let f(x)=sin^(-1)((2phi(x))/(1+phi^(2)(x))) . Find the interval in which f(x) is increasing or decreasing.

Find the intervals in which f(x)=(x)/(log x) is increasing or decreasing

Find the intervals in which f(x)=(x)/(log x) is increasing or decreasing.

Find the intervals in which f(x)=(x)/(log x) is increasing or decreasing

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

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

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