Evaluate the Iterated Integral $\int _ { 0 } ^ { 4 } \int _ { \sqrt { x } } ^ { 2 } \cos y ^ { 3 } d y d x$

Short Answer

Evaluate the iterated integral $\int _ { 0 } ^ { 4 } \int _ { \sqrt { x } } ^ { 2 } \cos y ^ { 3 } d y d x$ by reversing the order of integration.