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Inverse Functions 1

This unit describes two methods for finding inverse functions and also explains that the domain of a function may need to be restricted before an inverse function can exist. After reading this text you should be able to: understand the difference between inverse functions and reciprocal functions; find an inverse function by reversing the operations applied to x in the original function; find an inverse function by algebraic manipulation; understand how to restrict the domain of a function so that it can have an inverse function; sketch the graph of an inverse function using the graph of the original function.

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