Find the inverse of the function x2 + y2 = 4 and the domain of the inverse for 0 ≤ x ≤ 2.

To get the inverse "relation" of an expression, we first off, do a quick switcharoo of the variables, and then solve for "y", so let's proceed,



and yes, the domain for the range 0 ⩽ x ⩽ 2, let's get instead the "range" of the original function,