They must not be inverse functions.
f(x)=x^2-1
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^2-1+1)=x
show that f(x) = x^2-1 (x is greater than and equal to 0) and g(x) = root(x-1) (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
2 answers
where did you get the (x+1) from??
1 answer