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If $$Ix = \int e^{\sin^2 x} \sin 2x \cdot \sin^2 x \, dx$$ and $$I(0) = 1$$, then $$I\left(\frac{\pi}{3}\right)$$ is equal to
Let
$$t=\sin^2x.$$
Then,
$$dt=\sin2x,dx.$$
Therefore,
$$I(x)=\int te^t,dt.$$
Using integration by parts,
$$\int te^t,dt=e^t(t-1)+C.$$
Hence,
$$I(x)=e^{\sin^2x}\left(\sin^2x-1\right)+C.$$
Using
$$I(0)=1,$$
we get
$$e^0(0-1)+C=1$$
$$-1+C=1$$
$$C=2.$$
Therefore,
$$I(x)=e^{\sin^2x}\left(\sin^2x-1\right)+2.$$
Now,
$$\sin^2\frac{\pi}{3}=\frac34.$$
Hence,
$$I\left(\frac{\pi}{3}\right)=e^{3/4}\left(\frac34-1\right)+2$$
$$=2-\frac{e^{3/4}}{4}.$$
Therefore,
$$\boxed{2-\frac{e^{3/4}}{4}}$$
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