优优班--学霸训练营 > 知识点挑题
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            • 1.

              \(11.\)实数\(x\),\(y\)满足约束条件\(\begin{cases} & x+3y\leqslant 3 \\ & x-y\geqslant 1 \\ & y\geqslant 0 \end{cases}\),它表示的平面区域为\(C\),目标函数\(z=x-2y\)的最小值为\({{p}_{1}}.\)由曲线\({{y}^{2}}=3x\left( y\geqslant 0 \right)\),直线\(x=3\)及\(x\)轴围成的平面区域为\(D\),向区域\(D\)内任投入一个质点,该质点落入\(C\)的概率为\({{p}_{2}}\),则\(2{{p}_{1}}-4{{p}_{2}}\)的值为(    )

              A.\(\dfrac{1}{2}\)
              B.\(\dfrac{2}{3}\)
              C.\(\dfrac{3}{5}\)
              D.\(\dfrac{4}{3}\)
            • 2.

              已知\(f(x)\)为偶函数且\(\int_{0}^{6}{f(x)dx=8}\),则\(\int_{-6}^{6}{f(x)dx=}\)                  \((\)   \()\)

              A.\(0\)
              B.\(4\)
              C.\(16\)
              D.\(64\)
            • 3.

              \(∫_{0}^{1}\left|{x}^{2}-1\right|dx= \)  \((\)    \()\)

              A.\(\dfrac{2}{3} \)
              B.\(4\)
              C.\(\dfrac{13}{3} \)
              D.\(\dfrac{14}{3} \)
            • 4.

              汽车以\(54km/h\)的速度行驶,到某处需要减速停车,设汽车以加速度\(3m/{{s}^{2}}\)刹车,问从开始刹车到停车,汽车走了多少米?

            • 5.

              在\(( \sqrt{x}+ \dfrac{a}{x}{)}^{6}(a > 0) \)的展开式中含常数项的系数是\(60\),则\(∫_{0}^{a}{x}^{2}dx \)的值为_______

            • 6.

              \(∫_{0}^{2}\left(2-\left|1-x\right|\right)dx= \)          

            • 7.

              \(\int{\begin{matrix} & e \\ & 1 \\ \end{matrix}}\ln xdx =(\)   \()\)

              A.\(1\)  
              B.\(e\);   
              C.\(e-1\);  
              D.\(0\)
            • 8.

              \((1)\)计算\(∫_{-3}^{3}( \sqrt{9-{t}^{2}}-{t}^{3})dt \)的值 

              \((2)\)计算由\(y=-x^{2}+5x-4\)与\(y=x-1\)所围成的封闭区域的面积

            • 9.

              直线\(y=4x\)与曲线\(y={{x}^{3}}\)围成图形的面积为\((\)    \()\)

              A.\(2\)                  
              B.\(4\)                
              C.\(6\)                  
              D.\(8\)
            • 10.

              若\(f(x)={{x}^{2}}+2\int_{0}^{1}{f(x)dx}\),则\(\int_{0}^{1}{f(x)}dx= (\)   \()\)

              A.\(-1\)
              B.\(-\dfrac{1}{3}\)
              C.\(\dfrac{1}{3}\)
              D.\(1\)
            0/40

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