Question

Nilai maksimum f(x) = 2-3 cos(x+phi/6)adalah...

Answer 1

F(x) = 2 - 3 cos (x + π/6)
nilai cos (x + π/6) maksimum = 1 dan minimum = -1
nilai f(x)  untuk cos (x+π/6)  = 1 --> f(x) = 2 -3(1) = -1
nilai f(x) untuk cos(x+π/6) = -1 ---> f(X) = 2 - 3(-1) = 5

nilai maksimum f(x) = 5