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Let f (x) [ {:(1+x"," , 0 le x le 2),( ...

Let `f (x) [ {:(1+x"," , 0 le x le 2),( 3-x"," ,2 lt x le 3):}:`
` g(x) =f (f (x)):`

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`A toR; Bto R; C to R; D to S`
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