Решите уравнение f'(x)=0, если f (x) =sin6x+con6x+5
(sin6x+con6x+5)'=6cos6x-6sin6x-0 6(sin(π/2-6x)-sin6x)=0 2sin(π/4-6x)cosπ/4=0 sin(π/4-6x)=0 π/4-6x=πn -6x=-π/4+πn x=π/24+πn/6