优优班--学霸训练营 > 知识点挑题
全部资源
          排序:
          最新 浏览

          50条信息

            • 1.

              \(i\)为虚数单位,\(i^{2018}=\)________.

            • 2.

              计算:\( \dfrac{2+2i}{(1-i)^{2}}·\left( \left. \dfrac{ \sqrt{2}}{1+i} \right. \right)^{2 020} =\)________.

            • 3.

              已知\(i\)是虚数单位,则\({{\left( \dfrac{1-i}{1+i} \right)}^{6}}+{{\left( \dfrac{\sqrt{2}}{1-i} \right)}^{2018}}=\)____________________\(.\) 

            • 4.

              \( \dfrac{-2 \sqrt{3}+i}{1+2 \sqrt{3}i}+\left( \left. \dfrac{ \sqrt{2}}{1-i} \right. \right)^{2 017} =\)________.

            • 5.

              已知复数\(z=i+i^{2}+i^{3}+…+i^{2019}\),则\(z=\)________.

            • 6.

              \((1)\)计算\({{\log }_{2.5}}6.25+\lg \dfrac{1}{100}+\ln \sqrt{e}+{{2}^{1+{{\log }_{2}}3}} =\)______.

              \((2){{\left( \sqrt{x}-\dfrac{i}{x} \right)}^{8}}\)的二项展开式中,含\(x\)的一次项的系数为         \(.(\)用数字作答\()\)

              \((3)\)两圆\({{x}^{2}}+{{y}^{2}}+2ax+{{a}^{2}}-4=0\)和\({{x}^{2}}+{{y}^{2}}-4by-1+4{{b}^{2}}=0\)恰有三条公切线,若\(a\in R\),\(b\in R\)且\(ab\ne 0\),则\(\dfrac{1}{{{a}^{2}}}+\dfrac{1}{{{b}^{2}}}\)的最小值为_____________.

              \((4)\)对于函数\(f\left( x \right)\),如果\(f\left( x \right)\)可导,且\(f\left( x \right)={f}{{'}}\left( x \right)\)有实数根\(x\),则称\(x\)是函数\(f\left( x \right)\)的驻点\(.\)若函数\(g\left( x \right)={{x}^{2}}\left( x > 0 \right),h\left( x \right)=\ln x,\varphi \left( x \right)=\sin x\left( 0 < x < \pi \right)\)的驻点分别是\({{x}_{1}},{{x}_{2}},{{x}_{3}}\),则的大小关系是______\((\)用“\( < \)”连接\().\)   

            • 7.

              设\(i\)为虚数单位,则\((\)\(x\)\(+i)^{6}\)的展开式中含\(x\)\({\,\!}^{4}\)的项的系数为     

            • 8.

              若集合 \(A=\left\{ i,{{i}^{2}},{{i}^{3}},{{i}^{4}} \right\}\) \((i\) 是虚数单位\()\),\(B=\left\{ 1,-1 \right\}\),则\(A\bigcap B\) 等于____

            • 9.

              \((1)\)计算\({\log }_{2.5}6.25+\lg ⁡ \dfrac{1}{100}+\ln ⁡ \sqrt{e}+{2}^{1+{\log }_{2}3} =\)______.

              \((2){{\left( \sqrt{x}-\dfrac{i}{x} \right)}^{8}}\)的二项展开式中,含\(x\)的一次项的系数为         \(.(\)用数字作答\()\)


              \((3)\)两圆\({{x}^{2}}+{{y}^{2}}+2ax+{{a}^{2}}-4=0\)和\({{x}^{2}}+{{y}^{2}}-4by-1+4{{b}^{2}}=0\)恰有三条公切线,若\(a\in R\),\(b\in R\)且\(ab\ne 0\),则\(\dfrac{1}{{{a}^{2}}}+\dfrac{1}{{{b}^{2}}}\)的最小值为_____________.

              \((4)\)若函数\(f\left( x \right)\)满足\(f\left( x-1 \right)=\dfrac{1}{f\left( x \right)-1}\),当\(x\in \left[ -1,0 \right]\)时,\(f\left( x \right)=x\),若在区间\(\left[ -1,1 \right]\)上,\(g\left( x \right)=f\left( x \right)-mx+m\)有两个零点,则实数\(m\)的取值范围为           .

            • 10. 设i为虚数单位,则复数i2015的共轭复数为 ______
            0/40

            进入组卷