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Two functions are defined as under : f(x...

Two functions are defined as under : `f(x)={(x+1, x le 1), (2x+1, 1 < x le 2):}` and `g(x)={(x^2, -1 le x le 2), (x+2, 2 le x le 3):}` Find `fog` and `gof`

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