>>12
Let f(x) = x
2, Domain: [0,inf); Range: [0,inf)
Then f
-1(x) = sqrt(x), Domain: [0,inf); Range: [0,inf)
Inverse square root = f
-1(f
-1), (Definition of a function inverse)
Therefore, inverse square root of any value of x = x
2
This is the same for the "Inverse of the square root x" which is saying "take a function that is the inverse of the square root function and apply it to x. In the same sense you would say "
f of x" you substitute f for your function and get "
inverse of square root of x."