Evaluate the Integral$\int _ { 1 } ^ { \sqrt { \frac { \pi } { 2 } + 1 } } 4 x \cos \left( x ^ { 2 } - 1 \right) \mathrm { d } x$

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The Answer of Evaluate the Integral$\int _ { 1 } ^ { \sqrt { \frac { \pi } { 2 } + 1 } } 4 x \cos \left( x ^ { 2 } - 1 \right) \mathrm { d } x$

Evaluate the Integral $\int _ { 1 } ^ { \sqrt { \frac { \pi } { 2 } + 1 } } 4 x \cos \left( x ^ { 2 } - 1 \right) \mathrm { d } x$