Show that if f : R - {7/5} to R - {3/5} ...

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

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The correct Answer is:

`I _(A)`

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