函数为微分方程的通解。（        ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/19cff5efafb443a188966f6dabe63a62.png

A . lny／x=x+2B . lny／x=cex+1C .https://assets.asklib.com/psource/2015102616402594889.jpg =y／x+2D . siny／x=y／x

A . y=C y +C y +y B . y=C y +C y +（C +C ）y C . y=C y +C y -（1-C -C ）y D . y=C y +C y +（1-C -C ）y

A . C y +C y +y B . C y +C y -（C +C ）y C . C y +C y -（1-C -C ）y D . C y +C y +（1-C -C ）y

A . 1+x2=cyB . （1+x2）（3+2y）=cC .https://assets.asklib.com/psource/2015110316014925465.png D . （1+x2）2（3+2y）=c

A . c1y1+c2y2+y3 B . c1y1+c2y2-（c1+c3）y3 C . c1y1+c2y2-（1-c1-c2）y3 D . c1y1+c2y2+（1-c1-c2）y3

A . lnx+C B . ln（x+C. C . C2+ln|x+C1| D . C2-ln|x+C1|

A .https://assets.asklib.com/psource/201510300907376719.jpg B .https://assets.asklib.com/psource/201510300907504172.jpg C .https://assets.asklib.com/psource/2015103009080470109.jpg D .https://assets.asklib.com/psource/201510300908171499.jpg

A .https://assets.asklib.com/psource/2015103009102186957.jpg B .https://assets.asklib.com/psource/2015103009103349223.jpg C .https://assets.asklib.com/psource/2015103009104759362.jpg D .https://assets.asklib.com/psource/2015103009105963667.jpg

A . ['y=f（x）+chttps://assets.asklib.com/psource/2015102616471385225.jpg B . y=f（x）https://assets.asklib.com/psource/2015102616471475863.jpg -https://assets.asklib.com/psource/2015102616471475863.jpg +cC . y=f（x）-1+chttps://assets.asklib.com/psource/2015102616471385225.jpg D . y=f（x）-1+chttps://assets.asklib.com/psource/2015102616471475863.jpg

方程<img src='https://img2.soutiyun.com/ask/2020-10-29/972822370715043.png' />的通解中应包含的任意常数的个数为(). A.2 B.3 C.4 D.0

A．C1y1＋C2y2＋y3 B．C1y1＋C2y2－(C1＋C2)y3 C．C1y1＋C22y2＋(1－C1－C2)y3 D．C1y1＋C2y2－(1－C1－C2)y3

验证函数y₁=e^4x与y₂=e^-x是方程y&quot;-3y&39;-4y=0的两个解，并写出该方程的通解．

<img src='https://img2.soutiyun.com/ask/2020-10-27/972663120445965.png' />

A．n-1 B．n C．n+1 D．n+2

<img src='https://img2.soutiyun.com/ask/2020-12-11/976534149617845.png' />

设四元齐次线性方程组(I)为<img src='https://img2.soutiyun.com/ask/2020-11-19/974645357624253.png' />又已知某齐次线性方程组 (II)的通解为<img src='https://img2.soutiyun.com/ask/2020-11-19/974645377735404.png' /> (1)求齐次线性方程组(I)的基础解系; (2)问方程组(I)和(II)是否有非零公共解？若有，则求出所有的非零公共解;若没有，则说明理由。