共50条信息
已知\(f(x)\)为偶函数且\(\int_{0}^{6}{f(x)dx=8}\),则\(\int_{-6}^{6}{f(x)dx=}\) \((\) \()\)
在等比数列\(\{a_{n}\}\)中,\(a_{3}=7\),前\(3\)项之和\(S_{3}=21\),则公比\(q\)的值为\((\) \()\)
\({\,\!}\)
函数\(f\left( x \right)=\begin{cases} 2-x,{ }x\leqslant 0, \\ \sqrt{4-{{x}^{2}}},0 < x\leqslant 2, \end{cases}\),则\(\int{_{-2}^{2}}f\left( x \right)dx\)的值为 \((\) \()\)
\(\int{\begin{matrix} & e \\ & 1 \\ \end{matrix}}\ln xdx =(\) \()\)
若\(f(x)={{x}^{2}}+2\int_{0}^{1}{f(x)dx}\),则\(\int_{0}^{1}{f(x)}dx= (\) \()\)
由曲线\(y={{x}^{2}}\)、和直线\(x=0,x=1,y={{t}^{2}},t\in (0,1)\)所围成的图形面积的最小值\((\) \()\)
\(∫_{0}^{1} \sqrt{1-{x}^{2}}dx \)的值是\((\) \()\)
已知\({S}_{1}=\int _{1}^{2}xdx,{S}_{2}=\int _{1}^{2}{e}^{x}dx,{S}_{3}=\int _{1}^{2}{x}^{2}dx \) ,则\({{S}_{1}},{{S}_{2}},{{S}_{3}}\)的大小关系为\((\) \()\)
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