Question

1.Пусть f(x)=cosx+sin 2x.Найдите:а)f(0);б)f(Π÷2).

Answer 1

а) f(0) = Cos 0 + Sin(2*0) = 1 + 0 = 1
б) f(π/2) = Cosπ/2 + Sin(2*π/2) = 0 + Sinπ = 0 + 0 = 0