Given $f(x)=\sin ^{2} 5 x$ $\quad$ $\quad$

Short Answer

Given $f(x)=\sin ^{2} 5 x$ $\quad$ $\quad$ $0<$$x<\frac{\pi}{5}$ .
(a) Find the intervals on which f is increasing or decreasing.
(b) Find the relative maxima and relative minima of f.