Evaluating Rational Functions
Let f(x)\displaystyle {f{{\left({x}\right)}}} be the function f(x)=xx+1−1\displaystyle {f{{\left({x}\right)}}}={\frac{{{x}}}{{{x}+{1}}}}-{1}. Find the following:
Enter your answer as a whole number or a simplified fraction (not a decimal)
f(x)=\displaystyle {f{{\left({x}\right)}}}= xx+1−1\displaystyle {\frac{{{x}}}{{{x}+{1}}}}-{1}
f(2)=\displaystyle {f{{\left({2}\right)}}}=  
f(−9)=\displaystyle {f{{\left(-{9}\right)}}}=  
f(16)=\displaystyle {f{{\left({\frac{{{1}}}{{{6}}}}\right)}}}=  
f(−13)=\displaystyle {f{{\left(-{\frac{{{1}}}{{{3}}}}\right)}}}=  

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