Math, asked by GGcharan, 9 months ago

If f:A->B is a function, f(a1)=b, f(a2)=b then f^-1(b) =

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Answered by pulakmath007

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ANSWER ::

If f:A->B is a function, f(a1)=b, f(a2)=b then

f^-1(b) = { a1, a2 }

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