$$$9 x^{2} \sin{\left(x \right)} - 4 x \sin^{2}{\left(x \right)}$$$ 的積分

此計算器將求出 $$$9 x^{2} \sin{\left(x \right)} - 4 x \sin^{2}{\left(x \right)}$$$ 的不定積分（原函數），並顯示步驟。

求$$$\int \left(9 x^{2} \sin{\left(x \right)} - 4 x \sin^{2}{\left(x \right)}\right)\, dx$$$。

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