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If f:AB be both one-to-one and onto, the prove that f1:BA is also both one-to-one and onto.

Mumbai University > Computer Engineering > Sem 3 > Discrete Structures

Marks: 4 Marks

Year: Dec 2013

1 Answer
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f is one to one and onto hence a1,a2Af(a1)=f(a2)>a1=a2bBaA

s.t. b =f(a)

To prove that f1 is one one onto.

Let f(a1)=b1   and   f(a2)=b2

$$f^{-1}(b_1) …

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