Tolong ya 1. f(x) = √x dan g(x) = x/x+1 (g • f ) ^-1 (2)

jawab

f(x) = √x

g(x) = x/( x+1)

gof(x) = g { f(x)} = g (√x)
gof(x) = √x / (√x  + 1)
(gof)⁻¹ { (√x / (√x  +1)} = 
(gof)⁻¹ (2) = x 

x= √2 / (√2 + 1) --> rasionalkan
x = √2 (√2 - 1)/ (√2+1)(√2 -1)
x = (2 - √2) /(2 -1)
x = 2 - √2