设<img src='https://img2.soutiyun.com/latex/latex.action' />，则点x=1是f(x)的( )。

相似题目

• 设函数<img src='https://img2.soutiyun.com/latex/latex.action' />，则y有( )．

  A．极小值<img src='https://img2.soutiyun.com/latex/latex.action' /> B．极小值<img src='https://img2.soutiyun.com/latex/latex.action' /> C．极大值<img src='https://img2.soutiyun.com/latex/latex.action' /> D．极大值<img src='https://img2.soutiyun.com/latex/latex.action' />

  查看最佳答案

• 设<img src='https://img2.soutiyun.com/latex/latex.action' />则f(-x)=( )

  A．<img src='https://img2.soutiyun.com/latex/latex.action' /> B．<img src='https://img2.soutiyun.com/latex/latex.action' /> C．<img src='https://img2.soutiyun.com/latex/latex.action' /> D．<img src='https://img2.soutiyun.com/latex/latex.action' />

  查看最佳答案

• 设a为常数，则级数<img src='https://img2.soutiyun.com/latex/latex.action' />( )．

  A．绝对收敛； B．条件收敛； C．发散； D．收敛性取决于a的值．

  查看最佳答案

• 设<img src='https://img2.soutiyun.com/ask/2019-07-21/932567761612919.png' />，当K增大时，闭环系统( )。

  A．由稳定到不稳定 B．由不稳定到稳定 C．始终稳定 D．始终不稳定

  查看最佳答案

• 设<img src='https://img2.soutiyun.com/ask/2019-06-30/93073871106346.png' />，当K增大时，闭环系统( )。

  A．由稳定到不稳定 B．由不稳定到稳定 C．始终稳定 D．始终不稳定

  查看最佳答案

• 设z是任一复数,证明<img src='https://img2.soutiyun.com/ask/2021-01-13/9794048514659.png' />

  查看最佳答案

• 求下列等式：设<img src='https://img2.soutiyun.com/ask/2020-11-11/973957900743664.png' />

  查看最佳答案

• 设随机变量(X，Y)的密度函数为<img src='https://img2.soutiyun.com/latex/latex.action' />

  则概率P(X＜0.5，Y＜0.6)为( )． A．0.5 B．0.3 C．<img src='https://img2.soutiyun.com/latex/latex.action' /> D．0.4

  查看最佳答案

• 设曲线<img src='https://img2.soutiyun.com/latex/latex.action' />，则曲线______

  A．无渐近线 B．有水平渐近线 C．有水平和斜渐近线 D．有垂直和斜渐近线

  查看最佳答案

• 设随机变量X的概率密度<img src='https://img2.soutiyun.com/latex/latex.action' />常数c=( )．

  A．<img src='https://img2.soutiyun.com/latex/latex.action' />B．<img src='https://img2.soutiyun.com/latex/latex.action' />C．4 D．5

  查看最佳答案

• 设<img src='https://img2.soutiyun.com/latex/latex.action' />，则du=( )．

  A．2xdx-2x²dy B．<img src='https://img2.soutiyun.com/latex/latex.action' /> C．<img src='https://img2.soutiyun.com/latex/latex.action' /> D．<img src='https://img2.soutiyun.com/latex/latex.action' />

  查看最佳答案

• 设f(x)=arctanx，则<img src='https://img2.soutiyun.com/latex/latex.action' />( )。

  A．1 B．-1 C．<img src='https://img2.soutiyun.com/latex/latex.action' />D．<img src='https://img2.soutiyun.com/latex/latex.action' />

  查看最佳答案

• 设<img src='https://img2.soutiyun.com/latex/latex.action' />(n=1，2…)，则E(X)=( )．

  A．0 B．1 C．0.5 D．不存在

  查看最佳答案

• 设函数g(x)=1+x，且当x≠0时，<img src='https://img2.soutiyun.com/ask/2020-02-18/950885721858992.png' />，则<img src='https://img2.soutiyun.com/ask/2020-02-18/950885746436467.png' />等于( )

  A．0 B．1 C．3 D．-3

  查看最佳答案

• 设A为n阶实矩阵，试证<img src='https://img2.soutiyun.com/ask/2020-11-27/975337127824512.jpg' />

  查看最佳答案

• 设<img src='https://img2.soutiyun.com/ask/2020-12-15/976910006079741.png' />为同一区间上的可导函数,证明

  <img src='https://img2.soutiyun.com/ask/2020-12-15/976910017704406.png' />

  查看最佳答案

• 设p＞1，证明不等式<img src='https://img2.soutiyun.com/ask/2021-01-18/979838709003026.png' />

  查看最佳答案

• 设u=f(xyz)，则<img src='https://img2.soutiyun.com/latex/latex.action' />=( )

  A．<img src='https://img2.soutiyun.com/latex/latex.action' /> B．f_x(xyz) C．f&39;(xuz)yz D．<img src='https://img2.soutiyun.com/latex/latex.action' />

  查看最佳答案

• 设<img src='https://img2.soutiyun.com/latex/latex.action' />则<img src='https://img2.soutiyun.com/latex/latex.action' />=( )．

  A．<img src='https://img2.soutiyun.com/latex/latex.action' /> B．<img src='https://img2.soutiyun.com/latex/latex.action' /> C．<img src='https://img2.soutiyun.com/latex/latex.action' /> D．<img src='https://img2.soutiyun.com/latex/latex.action' />

  查看最佳答案

• 设<img src='https://img2.soutiyun.com/latex/latex.action' />=( )

  A．<img src='https://img2.soutiyun.com/latex/latex.action' /> B．<img src='https://img2.soutiyun.com/latex/latex.action' /> C．<img src='https://img2.soutiyun.com/latex/latex.action' /> D．<img src='https://img2.soutiyun.com/latex/latex.action' />

  查看最佳答案

• 设<img src='https://img2.soutiyun.com/ask/2019-12-23/94594055571456.png' />，则当x=( )时，D=0。

  A．1 B．a C．b D．c

  查看最佳答案

• 设函数<img src='https://img2.soutiyun.com/ask/2019-12-21/945780553197574.png' />，则( )成立。

  A．F(x)不是随机变量的分布函数 B．F(x)是随机变量的分布函数 C．F(x)是离散型随机变量分布函数 D．F(x)是连续型随机变量的分布函数

  查看最佳答案

• 设a≠0,|r|＜1,求<img src='https://img2.soutiyun.com/ask/2020-10-26/972583970755153.png' />

  查看最佳答案

• 设<img src='https://img2.soutiyun.com/shangxueba/ask/2022-04/24/826/20220424090836513.png' />，则A-B=()。

  A．<img src='https://img2.soutiyun.com/shangxueba/ask/2022-04/24/322/20220424090848529.png' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/2022-04/24/1384/20220424090858623.png' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/2022-04/24/327/20220424090909755.png' /> D．<img src='https://img2.soutiyun.com/shangxueba/ask/2022-04/24/786/20220424090918198.png' />

  查看最佳答案