Question

\[f(x)=\frac{x}{2x^2 +1}\]
\[f(x)= x*\frac{1}{-2x^2}\]
\[x\sum_{n=1}^{\infty}(-2x^2)^n\]
\[\sum_{n=1}^{\infty}-2x^{3n}\]
\[r=x^3\]
\[|x^3|<1\]
\[-1 13 years ago