Practice problem

Interpret Absolute Value Functions as Piecewise

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Define $f(\diamond)=|\diamond|$ as a piecewise function.

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y=\left\{\begin{matrix} \diamond\,\,\,\,\text{if}\,\,\,\,\diamond\leq0\\-\diamond\,\,\,\,\text{if}\,\,\,\,\diamond<0\end{matrix}\right.

y=\left\{\begin{matrix} \diamond\,\,\,\,\text{if}\,\,\,\,\diamond\geq0\\-\diamond\,\,\,\,\text{if}\,\,\,\,\diamond<0\end{matrix}\right.

y=\left\{\begin{matrix} \diamond\,\,\,\,\text{if}\,\,\,\,\diamond>0\\-\diamond\,\,\,\,\text{if}\,\,\,\,\diamond<0\end{matrix}\right.

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