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Show that if f : R - {(7)/(5)} rarr R- {...

Show that if f : R - `{(7)/(5)} rarr R- {(3)/(5)} ` is defined by f (x) = `(3x+4)/(5x-7)` andc g:R - `{(3)/(5)} rarr R - {(7)/(5)}` is defined by g(x) = `(7x+4)/(5x-3)` then fog `= I_(A)` and gof = `I_(B)` where A = R - `{(3)/(5)}` B=R - `{(7)/(5)} , I_(A) (x) = x AA x in A ` and `I_(B) (x) =x AA x in B` are called identity functions on sets A and B respectively.

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