Question

f(x)=ctgx/3 найдите произведеную функции ​

Answer 1

$f(x)=frac{Ctgx}{3}=frac{1}{3}Ctgx\\f'(x)=frac{1}{3}(Ctgx)'=frac{1}{3}*(-frac{1}{Sin^{2} x})=-frac{1}{3Sin^{2}x }$