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Mathematics for IGCSE & O level - Functions (Section 2 - No. 27)
What is the general form of an inverse function?
f(x) = y
f^-1(y)=x
f^-1(x) = y
f(y)=x
Explication
If y=f(x), then f^-1(y)=x, and if we swap x and y, the general form is f^-1(x) = y.
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