可导能推出连续，但是连续不能推出可导。（）

A . a=1，b=0 B . a=0，b=1 C . a=2，b=-1 D . a=-1，b=2

A .https://assets.asklib.com/psource/26831447829873297.png B .https://assets.asklib.com/psource/95121447829881756.png C .https://assets.asklib.com/psource/14391447829888994.png D .https://assets.asklib.com/psource/14101447829896978.png

A . 正确 B . 错误

A . 肾小管坏死 B . 肾间质纤维化 C . 前列腺素合成障碍 D . 阻塞肾小管、肾小球 E . 非少尿型急性肾衰竭、低钾血症和低镁血症

A . 正确 B . 错误

A. 对 B. 错

A.对 B.错

设<img src='https://img2.soutiyun.com/ask/2021-01-26/980527003501687.png' />是x的连续可导函数，且<img src='https://img2.soutiyun.com/ask/2021-01-26/98052701142014.png' /> <img src='https://img2.soutiyun.com/ask/2021-01-26/980527018376538.png' />

设函数f(x)二阶连续可导,且f(0)=0,f'(0)=1,求<img src='https://img2.soutiyun.com/ask/2020-12-08/976282425721188.png' />

函数可导必定连续，函数连续必定可导。()

试确定常数a，b的值，使函数<img src='https://img2.soutiyun.com/ask/2020-12-19/977254184261656.png' />在x=1出连续且可导。

设f(x)二阶连续可导，且<img src='https://img2.soutiyun.com/ask/2020-12-04/975952141695317.jpg' />，则()。 A.f(0)是f(x)的极小值 B.f(0)是f(x)的极大值 C.(0，f(0))是曲线y=f(x)的拐点 D.x=0是f(x)的驻点但不是极值点

此题为判断题(对，错)。

设<img src='https://img2.soutiyun.com/ask/2020-11-02/973192351945649.png' />,其中f具有连续偏导数,g可导,求<img src='https://img2.soutiyun.com/ask/2020-11-02/973192369901676.png' />.

设<img src='https://img2.soutiyun.com/ask/2021-01-28/980692750486118.png' /> (1)证明f(x)在[0,+∞)上可导，且一致连续; (2)证明反常积分<img src='https://img2.soutiyun.com/ask/2021-01-28/980692795149672.png' />发散。

<img src='https://img2.soutiyun.com/shangxueba/ask/2021-08/19/341/20210819164403743.png' />