definite-integral

Question: $\int_{0}^{\infty }{\frac{{{x}^{3}}\,dx}{{{({{x}^{2}}+4)}^{2}}}=}$



1) 0
2) $\infty $
3) $\frac{1}{2}$
4) None of these
Solution: Explanation: No Explanation
Summation of series by definite Integration

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