If f\displaystyle {f} is invertible and f(−4)=4\displaystyle {f{{\left(-{4}\right)}}}={4}, then
f−1(4)=\displaystyle {{f}^{{-{1}}}{\left({4}\right)}}=  

and (f(−4))−1=\displaystyle {\left({f{{\left(-{4}\right)}}}\right)}^{{-{1}}}=   .

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