Evaluate the following using properties of definite integrals:
\(\int _{ -\frac { \pi }{ 4 } }^{ \frac { \pi }{ 4 } }{ { x }^{ 3 }{ cos }^{ 3 }xdx } \)

Evaluate the following integrals:
ഽ\(\sqrt { 2{ x }^{ 2 }-3 } \) dx

Evaluate the following
\(\int _{ 0 }^{ \infty }{ { e }^{ -mx } } { x }^{ 6 }dx\)

Evaluate
\(\Gamma(\frac{7}{2})\) 

Evaluate
\(\int _{ 0 }^{ \infty }{ { e }^{ -2x }{ x }^{ 5 }dx } \)