成考院校在线答案
- 2024-03-05 [单选] <p class="MsoNormal">13、<span lang="EN-US"> <!--[if gte vml 1]><v:shape id="图片_x0020_163" o:spid="_x0000_i1185" type="#_x0000_t75" style='width:442.8pt;height:48pt; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="xxds01.files/image161.png" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="590" height="64" v:shapes="图片_x0020_163" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image161.png"> <!--[endif]--></span></p>
- 2024-03-05 [单选] <span style="font-family:"font-size:12pt;">40、<span><img width="30" height="20" src="data:image/png;base64,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"></span></span><span style="font-family:Microsoft Yahei;font-size:12pt;">（</span><span style="font-family:"font-size:12pt;"> </span><span style="font-family:Microsoft Yahei;font-size:12pt;">）时，则方程组</span><span style="font-family:"font-size:12pt;"><span><img width="262" height="82" src="data:image/png;base64,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"></span></span><span style="font-family:Microsoft Yahei;font-size:12pt;">有无穷多解</span>
- 2024-03-05 [单选] <p class="MsoNormal" style="line-height:20.0pt;mso-line-height-rule:exactly">1、<span lang="EN-US"> <!--[if gte vml 1]><v:shape id="图片_x0020_179" o:spid="_x0000_i1203" type="#_x0000_t75" style='width:330pt;height:27pt; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="xxds02.files/image185.png" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="440" height="36" v:shapes="图片_x0020_179" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image185.png"> <!--[endif]--></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2024-03-05 [单选] <p class="MsoNormal">29、<span lang="EN-US" style="font-size:12.0pt"><span style="position:relative;top:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1226" type="#_x0000_t75" style='width:103.8pt;height:18.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image343.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="138" height="25" v:shapes="_x0000_i1226" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image344.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1226" DrawAspect="Content" ObjectID="_1604819183"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">分别是二维随机变量</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:7.0pt;mso-text-raise:-7.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1227" type="#_x0000_t75" style='width:35.4pt;height:20.4pt' o:ole=""> <v:imagedata src="xxdsb08.files/image345.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="47" height="27" v:shapes="_x0000_i1227" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image346.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1227" DrawAspect="Content" ObjectID="_1604819184"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">的分布函数和边缘分布函数，</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1228" type="#_x0000_t75" style='width:102pt;height:18.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image347.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="136" height="25" v:shapes="_x0000_i1228" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image348.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1228" DrawAspect="Content" ObjectID="_1604819185"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">分别是</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:7.0pt;mso-text-raise:-7.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1229" type="#_x0000_t75" style='width:35.4pt;height:20.4pt' o:ole=""> <v:imagedata src="xxdsb08.files/image349.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="47" height="27" v:shapes="_x0000_i1229" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image346.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1229" DrawAspect="Content" ObjectID="_1604819186"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">的联合密度和边缘密度，则（</span><span style="font-size:12.0pt"> </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2024-03-05 [单选] <p class="MsoNormal">25、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">随机变量</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:2.0pt;mso-text-raise:-2.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1095" type="#_x0000_t75" style='width:14.4pt;height:12.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image120.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="19" height="17" v:shapes="_x0000_i1095" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image127.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1095" DrawAspect="Content" ObjectID="_1604819050"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">服从正态分布</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1096" type="#_x0000_t75" style='width:37.8pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image128.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="50" height="21" v:shapes="_x0000_i1096" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image129.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1096" DrawAspect="Content" ObjectID="_1604819051"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">，则</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1097" type="#_x0000_t75" style='width:56.4pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image130.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="75" height="21" v:shapes="_x0000_i1097" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image131.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1097" DrawAspect="Content" ObjectID="_1604819052"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">（</span><span style="font-size:12.0pt"> </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2024-03-05 [单选] <p class="MsoNormal" style="line-height:150%">1、<span style="font-size:12.0pt; line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-font-kerning:0pt">设</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%"><span style="position: relative;top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1304" type="#_x0000_t75" style='width:27pt;height:16.8pt' o:ole=""> <v:imagedata src="xxds05.files/image354.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="36" height="22" v:shapes="_x0000_i1304" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image355.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1304" DrawAspect="Content" ObjectID="_1604819115"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;line-height:150%; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">是</span><span lang="EN-US" style="font-size:12.0pt; line-height:150%"><span style="position:relative;top:3.0pt;mso-text-raise: -3.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1305" type="#_x0000_t75" style='width:10.8pt;height:12pt' o:ole=""> <v:imagedata src="xxds05.files/image356.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="14" height="16" v:shapes="_x0000_i1305" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image249.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1305" DrawAspect="Content" ObjectID="_1604819116"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;line-height:150%; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">阶正定矩阵，则</span><span lang="EN-US" style="font-size:12.0pt; line-height:150%"><span style="position:relative;top:2.0pt;mso-text-raise: -2.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1306" type="#_x0000_t75" style='width:22.2pt;height:13.8pt' o:ole=""> <v:imagedata src="xxds05.files/image357.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="30" height="18" v:shapes="_x0000_i1306" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image358.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1306" DrawAspect="Content" ObjectID="_1604819117"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;line-height:150%; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">是（</span><span style="font-size:12.0pt;line-height:150%"> </span><span style="font-size:12.0pt;line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2024-03-05 [单选] <p class="MsoNormal">2、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">设</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"> <v:stroke joinstyle="miter"></v:stroke> <v:formulas> <v:f eqn="if lineDrawn pixelLineWidth 0"></v:f> <v:f eqn="sum @0 1 0"></v:f> <v:f eqn="sum 0 0 @1"></v:f> <v:f eqn="prod @2 1 2"></v:f> <v:f eqn="prod @3 21600 pixelWidth"></v:f> <v:f eqn="prod @3 21600 pixelHeight"></v:f> <v:f eqn="sum @0 0 1"></v:f> <v:f eqn="prod @6 1 2"></v:f> <v:f eqn="prod @7 21600 pixelWidth"></v:f> <v:f eqn="sum @8 21600 0"></v:f> <v:f eqn="prod @7 21600 pixelHeight"></v:f> <v:f eqn="sum @10 21600 0"></v:f> </v:formulas> <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></v:path> <o:lock v:ext="edit" aspectratio="t"></o:lock> </v:shapetype><v:shape id="_x0000_i1028" type="#_x0000_t75" style='width:54.6pt; height:15.6pt' o:ole=""> <v:imagedata src="xxdsb06.files/image001.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="73" height="21" v:shapes="_x0000_i1028" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image002.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1028" DrawAspect="Content" ObjectID="_1604818888"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">，则（</span><span style="font-size:12.0pt"> </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2024-03-05 [单选] <p class="MsoNormal">7、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">设随机变量</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1150" type="#_x0000_t75" style='width:26.4pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image214.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="35" height="21" v:shapes="_x0000_i1150" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image215.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1150" DrawAspect="Content" ObjectID="_1604819106"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">相互独立，概率密度分别为</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:16.0pt;mso-text-raise:-16.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1151" type="#_x0000_t75" style='width:96pt;height:37.8pt' o:ole=""> <v:imagedata src="xxdsb08.files/image216.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="128" height="50" v:shapes="_x0000_i1151" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image217.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1151" DrawAspect="Content" ObjectID="_1604819107"> </o:OLEObject> </xml><![endif]--><span style="mso-spacerun:yes"> </span><span style="position:relative;top:16.0pt;mso-text-raise:-16.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1152" type="#_x0000_t75" style='width:96pt;height:37.8pt' o:ole=""> <v:imagedata src="xxdsb08.files/image218.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="128" height="50" v:shapes="_x0000_i1152" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image219.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1152" DrawAspect="Content" ObjectID="_1604819108"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">则二维随机变量</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1153" type="#_x0000_t75" style='width:34.2pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image172.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="46" height="21" v:shapes="_x0000_i1153" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image159.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1153" DrawAspect="Content" ObjectID="_1604819109"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">的联合密度函数为（</span><span style="font-size:12.0pt"> </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2024-03-05 [单选] <p class="MsoNormal" style="line-height:20.0pt;mso-line-height-rule:exactly">9、<span lang="EN-US"> <!--[if gte vml 1]><v:shape id="图片_x0020_89" o:spid="_x0000_i1114" type="#_x0000_t75" style='width:267pt;height:21.6pt; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="xxds02.files/image096.png" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="356" height="29" v:shapes="图片_x0020_89" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image096.png"> <!--[endif]--></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2024-03-05 [单选] <p class="MsoNormal">10、<span lang="EN-US" style="font-size:12.0pt">6</span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">本中文书和</span><span lang="EN-US" style="font-size:12.0pt">4</span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">本外文书，任意在书架上摆放，则</span><span lang="EN-US" style="font-size:12.0pt">4</span><span style="font-size:12.0pt; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">本外文书放在一起的概率是（</span><span style="font-size:12.0pt"> </span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>