Question

If f: R $\to$ R is defined by f(x) $=\frac{x}{x^2+1}$find f(f(2))

• A. $\frac{10}{29}$
• B. $\frac{1}{29}$
• C. $\frac{29}{10}$
• D. $29$

Answer 1

The correct option is A

$\frac{10}{29}$

$f\left(2\right)=\frac{2}{5}\Rightarrow f\left(f\right(2\left)\right)=f\left(\frac{2}{5}\right)=\frac{10}{29}$