F '(SiNx) = cos ^ 2 (x), the calculation of F (x) needs detailed process, This is the exercise there
f] As a result, we will be able to get the cos \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\group
f] As a result, we will be able to get the cos \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\group