Question
If $I(x) = \int {{e^{{{\sin }^2}x}}(\cos x\sin 2x - \sin x)dx} $ and $I(0) = 1$, then $I\left( {{\pi \over 3}} \right)$ is equal to :
If $I(x) = \int {{e^{{{\sin }^2}x}}(\cos x\sin 2x - \sin x)dx} $ and $I(0) = 1$, then $I\left( {{\pi \over 3}} \right)$ is equal to :