16. Given the function $f ( x ) = ( \sin x + \cos x ) ^ { 2 } + \cos 2 x$ (1) Find the minimum positive period of $f ( x )$; (2) Find the maximum and minimum values of $f ( x )$ on the interval $\left[ 0 , \frac { \pi } { 2 } \right]$.
16. Given the function $f ( x ) = ( \sin x + \cos x ) ^ { 2 } + \cos 2 x$\\
(1) Find the minimum positive period of $f ( x )$;\\
(2) Find the maximum and minimum values of $f ( x )$ on the interval $\left[ 0 , \frac { \pi } { 2 } \right]$.\\