设函数连续，则（ ）。80e577d50170a6b8a7afeb84c279ae2c

A . -2 B . -1 C . 0 D . 1

A . -2 B . -1 C . 0 D . 1

A . 3 B . 2 C . 4 D . 1

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

A . ['['xe-xB .https://assets.asklib.com/psource/2015102916504043916.jpg C .https://assets.asklib.com/psource/2015102916505413257.jpg D .https://assets.asklib.com/psource/2015102916510519496.jpg

A .https://assets.asklib.com/images/image2/2017051115131931198.png B .https://assets.asklib.com/images/image2/201705111513261131.png C .https://assets.asklib.com/images/image2/2017051115133213568.png D .https://assets.asklib.com/images/image2/2017051115133961141.png

A .https://assets.asklib.com/psource/201510281730216011.jpg 必收敛B . 当时https://assets.asklib.com/psource/2015102817304539684.jpg ，有https://assets.asklib.com/psource/2015102817310390466.jpg 收敛C . 当https://assets.asklib.com/psource/2015102817312471494.jpg 存在时，有https://assets.asklib.com/psource/2015102817314434109.jpg 收敛D . 当且仅当https://assets.asklib.com/psource/2015102817320265605.jpg 均存在时，有https://assets.asklib.com/psource/2015102817322045792.jpg 收敛

A . ['['https://assets.asklib.com/psource/2015102710500625074.jpg 是f（x）的一个原函数B .https://assets.asklib.com/psource/2015102710500763586.jpg 是f（x）的一个原函数（aC .https://assets.asklib.com/psource/2015102710500950491.jpg 是-f（x）的一个原函数（aD . f（x）在［a，b]上是可积的

A .https://assets.asklib.com/psource/1473388996617096045.png B .https://assets.asklib.com/psource/1473389002078001785.png C .https://assets.asklib.com/psource/1473389008002049419.png D .https://assets.asklib.com/psource/1473389014390038472.png

A . x2B . x2-2C . 2xD .https://assets.asklib.com/psource/2015102916495496748.jpg

A . 0 B . 1 C . -1 D . λ

A . ['['https://assets.asklib.com/psource/2016071617335765172.jpg 是f（x）的一个原函数B .https://assets.asklib.com/psource/2016071617340092360.jpg 是f（x）的一个原函数C .https://assets.asklib.com/psource/2016071617340325668.jpg 是f（x）的一个原函数D . f（x）在［a，b］上是可积的

1 ) ( £ x f ) ( ) ( x f x X P = = 0 ) ( ³ x f ) ( ) ( x F x f = ¢

<img src='https://img2.soutiyun.com/ask/2020-08-14/96624425787688.png' />

A．F(x)是不增函数 B．0≤F(x)≤1 C．F(x)是右连续的 D．F(-∞)=0,F(∞)=1

设函数f(x)在(0,+∞)内连续,f(1)=5/2,且对任何正数x和t,满足条件 <img src='https://img2.soutiyun.com/ask/2020-12-13/976721902069037.png' /> 则f(x)=().

设f(x)为连续函数,且f(0)≠0,则<img src='https://img2.soutiyun.com/ask/2020-12-13/976723029730536.png' />=().

设f(x)是连续函数，则d∫f(x)dx=______．

设f(x)为连续函数,<img src='https://img2.soutiyun.com/ask/2020-12-06/976111981271957.png' />则<img src='https://img2.soutiyun.com/ask/2020-12-06/97611199514275.png' />=(). A.<img src='https://img2.soutiyun.com/ask/2020-12-06/976112011317675.png' /> B.<img src='https://img2.soutiyun.com/ask/2020-12-06/976112023682382.png' /> C.<img src='https://img2.soutiyun.com/ask/2020-12-06/976112057665326.png' /> D.<img src='https://img2.soutiyun.com/ask/2020-12-06/976112068471944.png' />

设函数<img src='https://img2.soutiyun.com/shangxueba/ask/19011001-19014000/19013158/2015110315195516320.png' />，要使f（x）在x=0处连续，则a的值是：（） A．0 B． 1 C． -1 D． λ

设函数f(x,y)在(x0，y0)的某邻域内具有连续二阶偏导数，且<img src='https://img2.soutiyun.com/ask/2019-07-12/931776851413807.png' />，则<img src='https://img2.soutiyun.com/ask/2019-07-12/931776867607056.png' />()。 A.必为f(x,y)的极小值 B.必为f(x,y)的极大值 C.必为f(x,y)的极值 D.不一定是f(x,y)的极值

A．I（R）是R的一阶无穷小 B．I（R）是R的二阶无穷小 C．I（R）是R的三阶无穷小 D．I（R）至少是R的三阶无穷小

设f(x)为连续函数，又<img src='https://img2.soutiyun.com/ask/2020-12-20/977330361227981.png' />， 证明: (1)若f(x)为奇函数，则F(x)为偶函数. (2) 若f(x)为偶函数，则F(x)为奇函数.

设ƒ(χ)在[a,b]上连续,则<img src='https://img2.soutiyun.com/ask/2020-08-30/967622223484259.png' />与<img src='https://img2.soutiyun.com/ask/2020-08-30/967622239799192.png' />是χ的函数还是t与u的函数？它们的导数存在吗？如果存在等于什么？