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Show that the function `f:R->R` defined by `f(x)=x/(x^2+1) AA x in R` is neither one-one nor onto. Also if `g:R->R` is defined by `g(x)=2x-1` find fog(x)

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The correct Answer is:
the equation `x^(2) -x+1=0` does not give any real value of x.
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