Q)
Let A = {–1, 2, 2, – 4} and $B = \bigg\{ -\large\frac{1}{4}$$, -1, \large\frac{1}{2}$$, 1, 2 \bigg\}$ \[\] If f = {(x, y) | xy =1, x $ \in $ A, y $ \in $ B}, prove that ‘f’ is a function from ‘A’ to ‘B’. Also, find its domain, range and co-domain.
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