18. If $f(x) = x^5 + x^3 + x$, find $f^{-1}(3)$ and $f(f^{-1}(2))$.
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Step 1: To find $f^{-1}(3)$, we need to find the value of $x$ such that $f(x) = 3$. Show more…
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If $ f(x) = x^5 + x^3 + x $ , find $ f^{-1} (3) $ and $ f (f^{-1} (2)) $.
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$$ \text { If } f(x)=x^{5}+x^{3}+x, \text { find } f^{-1}(3) \text { and } f\left(f^{-1}(2)\right) \text { . } $$
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