A rule maps each element of D=-2,-1,1,2 by f:x to x2+1. State its range. Explain why it is a functio

Question

A rule maps each element of D=-2,-1,1,2 by f:x to x2+1. State its range. Explain why it is a function, whether it is one–one or many–one, and whether it has an inverse function on D.

Accepted Answer

Range $\{2,5\}$; a many–one function; no inverse function.

A finite mapping

A finite mapping

Solution:

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