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Find f(f(x)) if f(x)= x+1; 0lt=xlt=1 and...

Find `f(f(x))` if `f(x)= x+1; 0lt=xlt=1 and 1-x;1ltxlt=2`

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`f(x){(x+1,0<=x<=1),(1-x,1<=x<=2):}`
Case 1
`f(x)=x+1`
`f(f(x))=(x+1)+1`
`=x+2`
`0<=x+1<=1`
`-1<=x<=0`
`x=0`
...
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