【单选题】
下列方程是常微分方程的是( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/A3CCF902222C5F3D3BE56F98276D413E.png title=$9D(S{W]Q9`9OGAQ[E`N4Y4.png alt=$9D(S{W]Q9`9OGAQ[E`N4Y4.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/4BDA6C1AAA4C3BEF722ED18102F63AF6.png title=9S6SM$0@C1]HYMGBJG4ZXAR.png alt=9S6SM$0@C1]HYMGBJG4ZXAR.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/3BB54C16B2D33E5DBFA6127B1136CA4F.png title=MSTNEZ%J~{38WE}K`N[B93S.png alt=MSTNEZ%J~{38WE}K`N[B93S.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/37260B65D2E3E54B0A9BDF6A6CB8A4DF.png title=OJWQGDXWBKQ7UC~GPT4O7NJ.png alt=OJWQGDXWBKQ7UC~GPT4O7NJ.png/>
【单选题】
下列微分方程是线性的是( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/BE7DADA5DC2CEF5E3BEF635723609A88.png title=7Y7X[B`B`YJ`50(BUA9ZMVJ.png alt=7Y7X[B`B`YJ`50(BUA9ZMVJ.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/E35CBD3EEDAC70CE691E66F129FAAFDA.png title=9VQW~`T%O8JZC_HRQ65`FDB.png alt=9VQW~`T%O8JZC_HRQ65`FDB.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/B7B760708E09AF07B2C8837DF70C2589.png title=CD{A(O$T56~A}AUWCJ~W75R.png alt=CD{A(O$T56~A}AUWCJ~W75R.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/94CE66F44A257D96B3E720C101117100.png title=I7VNJ}9$D~3}[{@`S~4RLR0.png alt=I7VNJ}9$D~3}[{@`S~4RLR0.png/>
【单选题】
若<img src=https://huaweicloudobs.ahjxjy.cn/35EE784092FF7ACB6F7DD4A89C24329D.png title=QQ图片20160224221501.png alt=QQ图片20160224221501.png/>是二阶非齐次线性方程<img src=https://huaweicloudobs.ahjxjy.cn/BF80E75DC88661040CEB417E72A89625.png title=QQ图片20160224221516.png alt=QQ图片20160224221516.png/>的三个线性无关的特解,<img src=https://huaweicloudobs.ahjxjy.cn/33E05B95D74C8390CB16B77459FF34F7.png title=QQ图片20160224221546.png alt=QQ图片20160224221546.png/>为任意常数,则该方程的通解为( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/58793071810DC05D4132755BAA68B6C1.png title=QQ图片20160224221602.png alt=QQ图片20160224221602.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/BD6314F2A0B44ECEBDA7804F681D165D.png title=QQ图片20160224221627.png alt=QQ图片20160224221627.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/36BB040484C742B66EA68C10B95D7011.png title=QQ图片20160224221639.png alt=QQ图片20160224221639.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/F119C09F959A0EEB5FB5079F2DE597EB.png title=QQ图片20160224221651.png alt=QQ图片20160224221651.png/>
【单选题】
下列微分方程是线性的是( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/BE7DADA5DC2CEF5E3BEF635723609A88.png title=7Y7X[B`B`YJ`50(BUA9ZMVJ.png alt=7Y7X[B`B`YJ`50(BUA9ZMVJ.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/E35CBD3EEDAC70CE691E66F129FAAFDA.png title=9VQW~`T%O8JZC_HRQ65`FDB.png alt=9VQW~`T%O8JZC_HRQ65`FDB.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/B7B760708E09AF07B2C8837DF70C2589.png title=CD{A(O$T56~A}AUWCJ~W75R.png alt=CD{A(O$T56~A}AUWCJ~W75R.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/94CE66F44A257D96B3E720C101117100.png title=I7VNJ}9$D~3}[{@`S~4RLR0.png alt=I7VNJ}9$D~3}[{@`S~4RLR0.png/>
【单选题】
下列微分方程中是线性方程的是( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/538DC78DFD1EF553D74C41A4131824E3.png title=TZCU`(NG15E0O25O8YRK%{Q.png alt=TZCU`(NG15E0O25O8YRK%{Q.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/21422698CF0F55B4934382411DFF99D3.png title=2@I}([~4E@B}CAY_`(TJ(FT.png alt=2@I}([~4E@B}CAY_`(TJ(FT.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/56F50984A5BF03CD41E8E32733242830.png title=BBFNI(E$6Y9F`XB}TJ){(_O.png alt=BBFNI(E$6Y9F`XB}TJ){(_O.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/08350B5CFE2057C6699FB3C059382905.png title=G$JRDI}P@[E~JTF{E40G$]5.png alt=G$JRDI}P@[E~JTF{E40G$]5.png/>
【单选题】
微分方程<img src=https://huaweicloudobs.ahjxjy.cn/12225FB1DC37B2F2F1CB9F927DF3A25B.png title=(99YYCW[XI`6{1TSUD%DBL9.png alt=(99YYCW[XI`6{1TSUD%DBL9.png/>的通解<img src=https://huaweicloudobs.ahjxjy.cn/ED13234A1B91AA11BDCDE67E3DDBFBE9.png title=H{J]{KN}]5Q{SVAUQXA$7SG.png alt=H{J]{KN}]5Q{SVAUQXA$7SG.png/>为( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/C3B965C2336B8EAC06A6286A3C81BD21.png title=~~[MS9DZ)7O%Z9OL0J~2I7T.png alt=~~[MS9DZ)7O%Z9OL0J~2I7T.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/2378775CBFE769FCF1D4B4E57AE2434C.png title=N1(D]5I7Q(J4%%JO2P3{[`N.png alt=N1(D]5I7Q(J4%%JO2P3{[`N.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/2BCF30648B51450288CD3D731FD96352.png title=Y{CDVS4E)REOL[8`O(9F1XY.png alt=Y{CDVS4E)REOL[8`O(9F1XY.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/B445CDACE8238F3AA4710AB449E88CA1.png title=ZPHQ6AK$6_A403]}[[4S6EE.png alt=ZPHQ6AK$6_A403]}[[4S6EE.png/>
【单选题】
下列方程中为常微分方程的是( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/76EE3344F4B3F0A400C563E1B75A05C5.png title=[SEKXVFY5BOH_UDV{CX8M[1.png alt=[SEKXVFY5BOH_UDV{CX8M[1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/D2DA254C17523F281086022731C2A350.png title=DSX_H$AY$PVE[]DGSEMDT92.png alt=DSX_H$AY$PVE[]DGSEMDT92.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/772A07E0D831407BCCD6B1F9D797AB76.png title=]}7)$G$DUS1LB24{_(9`R@X.png alt=]}7)$G$DUS1LB24{_(9`R@X.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/46E6359E976B296C22C90C2B12285D14.png title=OH~JT`{B9@%]}CGWWIST`RK.png alt=OH~JT`{B9@%]}CGWWIST`RK.png/>
【单选题】
设二阶线性非齐次方程<img src=https://huaweicloudobs.ahjxjy.cn/BF80E75DC88661040CEB417E72A89625.png title=QQ图片20160224221516.png alt=QQ图片20160224221516.png/>有三个特解<img src=https://huaweicloudobs.ahjxjy.cn/30ADB8C932A284BCD6D6FD43634CD976.png title=QQ图片20160224222755.png alt=QQ图片20160224222755.png/>,则则其通解为( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/79BDF54DD0737592B3A67EA72A440242.png title=QQ图片20160224222917.png alt=QQ图片20160224222917.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/2805ACB453C0781F902D9FA252A1D5FD.png title=QQ图片20160224222932.png alt=QQ图片20160224222932.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/B6BB60DE9AB98BB12B14907339048EC1.png title=QQ图片20160224222949.png alt=QQ图片20160224222949.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/33E1A495886946BD8344FAA0C92C665A.png title=QQ图片20160224223005.png alt=QQ图片20160224223005.png/>
【单选题】
已知<img src=https://huaweicloudobs.ahjxjy.cn/250171269DE1EAEA9FE59DEE8BFE33BA.png title=Z8AQFF}MI1N9$@ISTBVL[_6.png alt=Z8AQFF}MI1N9$@ISTBVL[_6.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/E02D89F335D5B0BEDBCB24A25DDEF177.png title=%1PYP~8`A`P2XO0XL}Q98%2.png alt=%1PYP~8`A`P2XO0XL}Q98%2.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/69D80B472379AEA95C4AA497F0F03B9D.png title=_U~~]((YV3SG%(XE9LBJ$MJ.png alt=_U~~]((YV3SG%(XE9LBJ$MJ.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/B6855BA4D3D31E726705276A1F134D16.png title=K)K9(18JZEU0Y67$C9433KA.png alt=K)K9(18JZEU0Y67$C9433KA.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/CA8375B4374044476851055918F47A75.png title=VTDX~]OQE%W4HDMGX1J20%F.png alt=VTDX~]OQE%W4HDMGX1J20%F.png/>