【单选题】
下列方程是常微分方程的是( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/12103E9126D544E14AC06D83ABC68690.png title=8OTBW[X7@Q2WKDTH~DCD}9O.png alt=8OTBW[X7@Q2WKDTH~DCD}9O.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/96B6A202D02AB5BCE0940018BC088804.png title=36NGOZUQ_5A%T09%QOS5()O.png alt=36NGOZUQ_5A%T09%QOS5()O.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/9EF7820B824292764655EE85700A8457.png title=A@_2{TI1KUV(H$~Z4TLTZ_D.png alt=A@_2{TI1KUV(H$~Z4TLTZ_D.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/2A61ADB4A3D244026070805B5774D53B.png title=GJW{S0BSV3D0}8)QK0BIQUJ.png alt=GJW{S0BSV3D0}8)QK0BIQUJ.png/>
【单选题】
下列式子正确的是( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/4BADA9188E0800A6071256FD3CF4B87C.png title=G_E)XX()FRFO[K)V0C)L}27.png alt=G_E)XX()FRFO[K)V0C)L}27.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/6EA3577A3914309208EEFDD931DC21F0.png title=VVTA5~AIZ88M7{B34{FGGA5.png alt=VVTA5~AIZ88M7{B34{FGGA5.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/12AF42423433AAA2BF9802CF067D4953.png title=Y}3{$%)KY5PLL[RWEW}6}BG.png alt=Y}3{$%)KY5PLL[RWEW}6}BG.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/D29CDF5E3F405EFD3C428BD94153D9D4.png title=Z}4HW[Q7IZI}E73NP0R(PNV.png alt=Z}4HW[Q7IZI}E73NP0R(PNV.png/>
【单选题】
设<img src=https://huaweicloudobs.ahjxjy.cn/FAB9F3D6009041EBF2BE4E993BD76874.png title=PLNOODIH}S[)_AA_IQ4DZSC.png alt=PLNOODIH}S[)_AA_IQ4DZSC.png/>,则( )
①
极限<img src=https://huaweicloudobs.ahjxjy.cn/04AF0E066B591CABCB335C8E59320903.png title=YRG}S@6LLR4Z3`TG]}[EF~4.png alt=YRG}S@6LLR4Z3`TG]}[EF~4.png/>存在,但<img src=https://huaweicloudobs.ahjxjy.cn/9007335C5254C4CCDA91C4AB67763D4E.png title=}I]2MM~D7U7)6P]_13(XI`4.png alt=}I]2MM~D7U7)6P]_13(XI`4.png/>在点<img src=https://huaweicloudobs.ahjxjy.cn/EF89E2B8AEB141D513A62FDD7D532AF7.png title=`PFC92T0)C1A[@0Z@0TG@MN.png alt=`PFC92T0)C1A[@0Z@0TG@MN.png/>处不连续
②
极限<img src=https://huaweicloudobs.ahjxjy.cn/04AF0E066B591CABCB335C8E59320903.png title=YRG}S@6LLR4Z3`TG]}[EF~4.png alt=YRG}S@6LLR4Z3`TG]}[EF~4.png/>存在,且<img src=https://huaweicloudobs.ahjxjy.cn/9007335C5254C4CCDA91C4AB67763D4E.png title=}I]2MM~D7U7)6P]_13(XI`4.png alt=}I]2MM~D7U7)6P]_13(XI`4.png/>在<img src=https://huaweicloudobs.ahjxjy.cn/EF89E2B8AEB141D513A62FDD7D532AF7.png title=`PFC92T0)C1A[@0Z@0TG@MN.png alt=`PFC92T0)C1A[@0Z@0TG@MN.png/>处连续
③
极限<img src=https://huaweicloudobs.ahjxjy.cn/04AF0E066B591CABCB335C8E59320903.png title=YRG}S@6LLR4Z3`TG]}[EF~4.png alt=YRG}S@6LLR4Z3`TG]}[EF~4.png/>不存在,但<img src=https://huaweicloudobs.ahjxjy.cn/9007335C5254C4CCDA91C4AB67763D4E.png title=}I]2MM~D7U7)6P]_13(XI`4.png alt=}I]2MM~D7U7)6P]_13(XI`4.png/>在<img src=https://huaweicloudobs.ahjxjy.cn/EF89E2B8AEB141D513A62FDD7D532AF7.png title=`PFC92T0)C1A[@0Z@0TG@MN.png alt=`PFC92T0)C1A[@0Z@0TG@MN.png/>不连续
④
极限<img src=https://huaweicloudobs.ahjxjy.cn/04AF0E066B591CABCB335C8E59320903.png title=YRG}S@6LLR4Z3`TG]}[EF~4.png alt=YRG}S@6LLR4Z3`TG]}[EF~4.png/>不存在,但<img src=https://huaweicloudobs.ahjxjy.cn/9007335C5254C4CCDA91C4AB67763D4E.png title=}I]2MM~D7U7)6P]_13(XI`4.png alt=}I]2MM~D7U7)6P]_13(XI`4.png/>在<img src=https://huaweicloudobs.ahjxjy.cn/EF89E2B8AEB141D513A62FDD7D532AF7.png title=`PFC92T0)C1A[@0Z@0TG@MN.png alt=`PFC92T0)C1A[@0Z@0TG@MN.png/>处连续
【单选题】
二元函数<img src=https://huaweicloudobs.ahjxjy.cn/3B4502C5C5DFF2F6242ABF3CB84260B2.png title=]XK95M8]_U7H5QN_RXG%C8R.png alt=]XK95M8]_U7H5QN_RXG%C8R.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/C9AEE107ECF19732E45761119CBA141F.png title=4LTY~D@QL16QR3)]3ESX96U.png alt=4LTY~D@QL16QR3)]3ESX96U.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/5F2FD6F9D14C2F7DE491F07C1343F256.png title=6$4U96KJW`10WH][1BO}C)0.png alt=6$4U96KJW`10WH][1BO}C)0.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/DAEDF46C28A86A7851D2919E7C3A2A0F.png title=CHANV){}PQPJYW~$J3O77MD.png alt=CHANV){}PQPJYW~$J3O77MD.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/715D1E66A9E44F684956EDF7CD8E0BE2.png title=S2R@H%XAW@RV`MK7D]PUM41.png alt=S2R@H%XAW@RV`MK7D]PUM41.png/>
【单选题】
设<img src=https://huaweicloudobs.ahjxjy.cn/C67CBDA727FEA56C7AB111CAB6F951AD.png title=QQ图片20160224215718.png alt=QQ图片20160224215718.png/>,则( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>为极值点
②
<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>为驻点
③
<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>为连续点
④
<img src=https://huaweicloudobs.ahjxjy.cn/EA6FB79FF8DF7A9F3A2D0CEB093C717F.png title=QQ图片20160224214006.png alt=QQ图片20160224214006.png/>在<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>有定义
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/4E83AB88EAA8300BFDC19C29FC0AF1CB.png title=RGX~@UCWLFP2_9WQZ75EZ)W.png alt=RGX~@UCWLFP2_9WQZ75EZ)W.png/>
【单选题】
已知<img src=https://huaweicloudobs.ahjxjy.cn/6996942FFC33E1FF153E4BCE471421C3.png title=4(@(57O8AS585X563{4A0VX.png alt=4(@(57O8AS585X563{4A0VX.png/>的定义域为( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/951312AE1D3258B3732EDC9C26C1FBCF.png title=@T])GRN}M~9QBFJU(}{WM3D.png alt=@T])GRN}M~9QBFJU(}{WM3D.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/0E8FCB241F7A956422D73021BCA97B22.png title=4(SZG[}G(MCE1L@$~}%FCRI.png alt=4(SZG[}G(MCE1L@$~}%FCRI.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/6D2A1D43207CAB7C6412B347FBA797C5.png title=R]A}4[@I[VTHRQ`QNL[PE`O.png alt=R]A}4[@I[VTHRQ`QNL[PE`O.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/6FC4C53977D96034F0B97D27A66778DA.png title=U@E)]Z79T9`D7@PEHY]K8_9.png alt=U@E)]Z79T9`D7@PEHY]K8_9.png/>
【单选题】
已知函数<img src=https://huaweicloudobs.ahjxjy.cn/8E74CF98041EAF7BA77DA9B9F76D0127.png title=DA~3]8AU@35KI0TVYMGI(3C.png alt=DA~3]8AU@35KI0TVYMGI(3C.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/B482B4823587008085B22EBCF1385CB3.png title=~_VAU8J@JMZC@MUT{`HU@B2.png alt=~_VAU8J@JMZC@MUT{`HU@B2.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/D5365CCD1B429E3EA174819A813D0EA0.png title=5K62CO(1PQ%GX(F5XDYH(7G.png alt=5K62CO(1PQ%GX(F5XDYH(7G.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/CFDC354FD7D370B85069C0C61E5C2928.png title=17IM_E~LIS2P(G7$I$~U~OM.png alt=17IM_E~LIS2P(G7$I$~U~OM.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/D029C374740C00726DCA7E51184FE8D9.png title=U~0Y$KE5O$}[MZC([NCR}PF.png alt=U~0Y$KE5O$}[MZC([NCR}PF.png/>
【单选题】
若<img src=https://huaweicloudobs.ahjxjy.cn/CBF3D9BEFC7E0424CFD833D6B2DEFF50.png title=S}H@OYK`WI)B0A84JZ0G3G2.png alt=S}H@OYK`WI)B0A84JZ0G3G2.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/F3775736BE57D41F3C0D198CDD39B590.png title=)0[$PX]EI{PQ`~)Z]DT$5~B.png alt=)0[$PX]EI{PQ`~)Z]DT$5~B.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/E4299ECBA53268C7219B250926C0E461.png title=OSIK41{YR6{IO%ZEMB9Q6N1.png alt=OSIK41{YR6{IO%ZEMB9Q6N1.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/F41258E5064F8C82946FBA557DE18579.png title=YL%_ZXX3EL59YYHZOP{T4F1.png alt=YL%_ZXX3EL59YYHZOP{T4F1.png/>
【单选题】
设<img src=https://huaweicloudobs.ahjxjy.cn/C67CBDA727FEA56C7AB111CAB6F951AD.png title=QQ图片20160224215718.png alt=QQ图片20160224215718.png width=212 height=25 border=0 vspace=0 style=width: 212px; height: 25px;/>,则( )
①
<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>为极值点
②
<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>为驻点
③
<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>为连续点
④
<img src=https://huaweicloudobs.ahjxjy.cn/EA6FB79FF8DF7A9F3A2D0CEB093C717F.png title=QQ图片20160224214006.png alt=QQ图片20160224214006.png/>在<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>有定义