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OpenStudy (anonymous):
f-1(x) =??? {x/2, x ≤ 0 {sqrt(x), x>0
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OpenStudy (anonymous):
\[f(x) = \left\{\begin{matrix} x/2 & x \le 0\\ \sqrt{x} & x > 0 \end{matrix}\right.\] is this f(x) ?
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