SOLUTION: What is the inverse for the function f(x)=x^2+2? Is the inverse f^-1(x) a function? Explain.

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Question 271899: What is the inverse for the function f(x)=x^2+2? Is the inverse f^-1(x) a function? Explain.
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)=x^2+2
y=x^2+2
x=y^2+2
y^2=x-2
y=sqrt(x-2), y=-sqrt(x-2)
f^-1(x)=+-sqrt(x-2)
.
Ed