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Let f: RvecR and g: RvecR be defined by ...

Let `f: RvecR` and `g: RvecR` be defined by `f(x)=x+1` and `g(x)=x-1.` Show that `fog=gof=I_Rdot`

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`f(x) =x+1 `
`f \circ g =f(g(x)) `
`=f(x-1)=(x)=x-1 . `
`f \circ g =x `
...
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  14. Let f(x)=[x] and g(x)=|x| . Find (gof)(5/3) fog(5/3)

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  15. Let f(x)=[x] and g(x)=|x| . Find (gof)(5/3)- fog(5/3)

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  16. Let f(x)=[x] and g(x)=|x| . Find (f+2g)(-1)

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