Mathematics

Mathematics

Problem

For bijective functions ff and gg, the inverse of the composition g∘fg\circ f is a) g−1∘f−1g^{-1}\circ f^{-1} b) g∘fg\circ f c) f−1∘g−1f^{-1}\circ g^{-1} d) (f∘g)−1(f\circ g)^{-1}

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