Question

Considere as funções f e g definidas por:
•f(x)=seno 4x •g(x)=1 - cosx

Determine:
a)f(π/2)
b) g(π)
c)f(π/6)
d)D(g)
e)Im(g)
f) x pertence à [0, 2π] tal que f(x) =1

Answer 1

f(pi/2) = sen 2pi = 0
g(pi) =1-cos pi = 1--1=1+1=2
f(pi/6) = sen (4.pi/6) = sen 2/3 pi = sen 120 = raiz de 3 / 2