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【多选题】
下面有关博客营销的说法正确的是()
A.
博客营销是利用博客这种网络应用形式开展的网络营销
B.
开展博客营销的基础是对企业人际资源的有效利用
C.
博客营销细分程度高,定向准确
D.
博客营销互动传播性强,信任程度虽然不高,但口碑效应好
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皮皮学刷刷变学霸
举一反三
【简答题】解方程:(2y﹣1) 2 ﹣3(2y﹣1)+2=0.
【简答题】微分方程2y"+2y'+y=0的通解为______。
【单选题】方程y′′+2y′=2x2−1y″+2y′=2x2−1的一个特解形如
A.
y = a x 3 + b x 2 + c x + d " role="presentation" style="display: inline-table; line-height: 0; font-size: 19.52px; overflow-wrap: normal; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; color: rgb(0, 0, 0); font-family: "Microsoft YaHei"; position: relative;" > y = a x 3 + b x 2 + c x + d y=ax3+bx2+cx+d ;
B.
y = a x 2 + b x + c " role="presentation" style="display: inline-block; line-height: 0; font-size: 19.52px; overflow-wrap: normal; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; color: rgb(0, 0, 0); font-family: "Microsoft YaHei"; position: relative;" > y = a x 2 + b x + c y=ax2+bx+c ;
C.
y = a x 4 + b x 3 + c x 2 + d x + e " role="presentation" style="display: inline-table; line-height: 0; font-size: 19.52px; overflow-wrap: normal; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; color: rgb(0, 0, 0); font-family: "Microsoft YaHei"; position: relative;" > y = a x 4 + b x 3 + c x 2 + d x + e y=ax4+bx3+cx2+dx+e ;
D.
y = a x + b " role="presentation" style="display: inline-table; line-height: 0; font-size: 19.52px; overflow-wrap: normal; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; color: rgb(0, 0, 0); font-family: "Microsoft YaHei"; position: relative;" > y = a x + b y=ax+b
【简答题】方程y"+2y'-8y=0称为______微分方程.
【单选题】16世纪,继佛罗伦萨之后,()成为文艺复兴运动的中心,h
A.
西西里
B.
罗马
C.
米兰
D.
威尼斯
【简答题】计算:[(x+y)(x﹣y)﹣(x+y) 2 ﹣2y(x﹣2y)]÷(﹣2y)
【判断题】王校长是河南经贸职业学院法人
A.
正确
B.
错误
【简答题】函数y=e x cosx,验证函数y满足方程y"-2y'+2y=0.
【简答题】设方程y''-3y'+2y=0,
【简答题】方程y"-2y'+2y=e x 的通解为
相关题目:
【单选题】方程y′′+2y′=2x2−1y″+2y′=2x2−1的一个特解形如
A.
y = a x 3 + b x 2 + c x + d " role="presentation" style="display: inline-table; line-height: 0; font-size: 19.52px; overflow-wrap: normal; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; color: rgb(0, 0, 0); font-family: "Microsoft YaHei"; position: relative;" > y = a x 3 + b x 2 + c x + d y=ax3+bx2+cx+d ;
B.
y = a x 2 + b x + c " role="presentation" style="display: inline-block; line-height: 0; font-size: 19.52px; overflow-wrap: normal; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; color: rgb(0, 0, 0); font-family: "Microsoft YaHei"; position: relative;" > y = a x 2 + b x + c y=ax2+bx+c ;
C.
y = a x 4 + b x 3 + c x 2 + d x + e " role="presentation" style="display: inline-table; line-height: 0; font-size: 19.52px; overflow-wrap: normal; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; color: rgb(0, 0, 0); font-family: "Microsoft YaHei"; position: relative;" > y = a x 4 + b x 3 + c x 2 + d x + e y=ax4+bx3+cx2+dx+e ;
D.
y = a x + b " role="presentation" style="display: inline-table; line-height: 0; font-size: 19.52px; overflow-wrap: normal; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; color: rgb(0, 0, 0); font-family: "Microsoft YaHei"; position: relative;" > y = a x + b y=ax+b