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Simply stated, the inverse of a function is a function where the variables are reversed.

If you have a function f(x) = y, the inverse is denoted as f-1(y) = x.

Examples:

y=x+3

Inverse is x=y+3, or y=x-3

y=2x+5

Inverse is x=2y+5, or y=(x-5)/2

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Q: What is inverse of a function?
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