Question

F(x)=x+2 dan g(x)=15/x. dengan demikian (f^-1°g^-1)(x)=1 untuk x=

Answer 1

F(x) = x + 2
y = x + 2
x = y - 2
f^-1(x) = x-2
g(x) = 15/x
y = 15/x
x = 15/y
g^-1(x) = 15/x
(f^-1o g^-1)(x) = 15/x - 2
15-2x per x = 1
15-2x = x
15 = 3x
x = 5