• 试题 ID 32950


设 $f(x)=\left\{\begin{array}{cc}x \mathrm{e}^{x^2}, & x \geq 0, \\ \sqrt{1-x^2}, & -1 \leq x < 0\end{array}\right.$ ,计算 $\int_1^3 f(x-2) \mathrm{d} x$ .
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