Define f: R->R by the rule:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]f(w) =

\left\{

\begin{array}{lr}

-5, if x < 0\\

0, if x=0\\

+5, if x > 0

\end{array}

\right.[/tex]

if f onto and/or one-to-one?

These questions always get me. Can someone please help me walk through this problem? What do I look for first, etc?

those should be "if" (if x < 0, if x=0, if x > 0 etc)

Any help would be appreciated.[tex]\bar{}[/tex]

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# One-to-one and/or onto?

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