- 二重积分存在，则二次极限一定存在。（ ）
- 微分方程 .w67046802813s .brush0 { fill: rgb(255,255,255); } .w67046802813s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w67046802813s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w67046802813s .font1 { font-style: italic; font-size: 260px; font-family: "Times New Roman", serif; } .w67046802813s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w67046802813s .font3 { font-size: 373px; font-family: Symbol, serif; } .w67046802813s .font4 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1 x yye ¢¢ -=+ 的一个特解应具有形式(式中 .w67046802789s .brush0 { fill: rgb(255,255,255); } .w67046802789s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w67046802789s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w67046802789s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w67046802789s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } , ab 为常数)（ ）.
- 设线性无关的函数 .w67046802788s .brush0 { fill: rgb(255,255,255); } .w67046802788s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w67046802788s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w67046802788s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w67046802788s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1 y , .w67046802837s .brush0 { fill: rgb(255,255,255); } .w67046802837s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w67046802837s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w67046802837s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w67046802837s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2 y , .w67046802814s .brush0 { fill: rgb(255,255,255); } .w67046802814s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w67046802814s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w67046802814s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w67046802814s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 3 y 都是二阶非齐次方程 .w67046802830s .brush0 { fill: rgb(255,255,255); } .w67046802830s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w67046802830s .font0 { font-size: 470px; font-family: Symbol, serif; } .w67046802830s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w67046802830s .font2 { font-size: 373px; font-family: Symbol, serif; } .w67046802830s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ( ) ( ) ( ) ypxyqxyfx ¢¢¢ ++= 的解, .w67046802807s .brush0 { fill: rgb(255,255,255); } .w67046802807s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w67046802807s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w67046802807s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w67046802807s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1 C , .w67046802854s .brush0 { fill: rgb(255,255,255); } .w67046802854s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w67046802854s .font0 { font-size: 260px; font-family: "Times New Roman", serif; } .w67046802854s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w67046802854s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2 C 是任意常数,则该非齐次方程的通解是（ ）.
- 下列级数中收敛的是（ ）
答案:错
答案:对
答案:错
答案:对
答案:对
答案:对
答案:错
答案:对
答案:对
答案:错
答案:错
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