math
posted by jasmine on .
find the domain, target, and rule of the inverse functions:
1. f(x)=(x+3)/(5x+2)
2. g(x)=1/square root of 2x1

y = (x+3)/(5x+2)
5xy+2y = x+3
(5y1)x = 32y
x = (32y)/(5y1)
So, the inverse function is (32x)/(5x1)
y = 1/√(2x1)
y^2 = 2x1
x = (y^2+1)/2
So, g^1(x) = (x^2+1)/2
You can probably figure out the rest.