CALCULUS
posted by joey .
show that f(x) = x^21 (x is greater than and equal to 0) and g(x) = root(x1) (x is greater than and equal to 1) are inverse functions.
when i try f(g(x)) = x and g(f(x)) = x to show that the two functions are inverses it doesn't work because i am not left with x when i solve the equation....
much help is needed thansk

They must not be inverse functions.
f(x)=x^21
y+1=x^2
x= + root (y+1)
g(x)=+root (x+1)
lets try the + root
f(g)=(x+1)1=x
g(f)=+root (X^21+1)=x 
where did you get the (x+1) from??