Polarize it
Calculus
Level
4
\[\large \int _{ -\infty }^{ \infty }{ \frac { { x }^{ 2 } }{ ({ x }^{ 2 }+4)^{ 3 } } } \, dx\]
The integral shown above can be written as \(\dfrac { \pi }{ { A }^{ 2 } } \). Find the value of \(|A| \).
by
Rui-Xian Siew