$$$\cos^{2}{\left(\sin{\left(x \right)} - 1 \right)}$$$ 的积分
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求$$$\int \cos^{2}{\left(\sin{\left(x \right)} - 1 \right)}\, dx$$$。
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求$$$\int \cos^{2}{\left(\sin{\left(x \right)} - 1 \right)}\, dx$$$。