This happens when you get a “plus or minus” case in the end. Now, the correct inverse function should have a domain coming from the range of the original function; and a range coming from the domain of the same function. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/8\/8e\/Find-the-Inverse-of-a-Quadratic-Function-Step-1-Version-2.jpg\/v4-460px-Find-the-Inverse-of-a-Quadratic-Function-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/8\/8e\/Find-the-Inverse-of-a-Quadratic-Function-Step-1-Version-2.jpg\/aid385027-v4-728px-Find-the-Inverse-of-a-Quadratic-Function-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
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