作者s871526117 (安安)
看板NTU-Exam
标题[试题] 徐治平 工程数学
时间Fri Nov 4 13:43:58 2011
课程名称︰工程数学
课程性质︰
课程教师︰徐治平
开课学院:工学院
开课系所︰化工系
考试日期(年月日)︰2011/11/4
考试时限(分钟):120
是否需发放奖励金:是
(如未明确表示,则不予发放)
试题 :
1.Find the general solution of the following equations (6% each)
(a) sin(2x)y'+2ysin^2(x)=2sin(x)
(b) y'+sec(x)y=cos(x)
(c) 2cos(x+y)-2xsin(x+y)-2xsin(x+y)y'=0
(d) 4y^4+3cos(x)+(16(y^3)x-3cos(y))y'=0
(e) 6(x^2)y+12xy+y^2+(6x^2+2y)y'=0
(f) 2y^2-9xy+(3xy-6x^2)y'=0
(g) y'=(1/x^2)y^2-(1/x)y+1
(h) y'+(1/x)y=(2/x^3)y^(-4/3)
(i) xy'=xcos(y/x)+y
(j) y"-2y'+10y=0
(k) (x^2)y"-11xy'+35y=0
2. Find the general solution of the following equations (8% each)
(a) y"-5y'+6y=8sin^2(4x)
(b) y"-2y'+y=3x+25sin(3x)
(c) (x^2)y"-11xy'+35y=0
3. Find the general solution of the following equation (10%)
y(iv)-5y"+4y=0
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◆ From: 140.112.7.214
1F:推 s93015a :1.(e) (6x^(22)y)? (6x^(22y))? 11/04 14:05
※ 编辑: s871526117 来自: 140.112.22.94 (11/04 17:21)
2F:→ s871526117 :抱歉打错了!!! 11/04 17:22
3F:推 jasonfghx :强 11/05 18:29