求微分方程xy'-y=1+x³的通解.解法1:xy'-y=1+x^3两边对x求导:y'+xy''-y'=3x^2xy''=3x^2y''=3x∫y''dx=∫3xdx+cy'=(3/2)x^2
https://www.ouer.net/chuzhongshuxue/z83x.html - 2022-05-11 00:48:16 - 中学数学试题求微分方程(1+x2)dy+(1+y2)dx=0的通解..楼上的做的思路不错,但错了一个符号:(1+x^2)dy=-(1+y^2)dx分离变量得dy/(1+y^2)=-dx/(1+x^2)两边积分得arctany
https://www.ouer.net/chuzhongshuxue/ufam.html - 2022-10-19 13:29:37 - 中学数学试题高数求微分方程通解,求xydx+根号下1-x平方 dy=0.分离变量法xydx+√(1-x^2)dy=0dy/y=-xdx/√(1-x^2)dy/y=0.5d(1-x^2)/√(1-x^2)积分:ln|
https://www.ouer.net/chuzhongshuxue/vs6d.html - 2022-10-28 03:56:01 - 中学数学试题解微分方程:dy/dx–2y/(x+1)=(x+1)^5/2..dy/dx–2y/(x+1)=(x+1)^5/2为一阶线性方程,由通解公式:y=(x+1)^2(C+∫(x+1)^(1/2)dx)=(x+
https://www.ouer.net/chuzhongshuxue/sd4h.html - 2022-10-11 19:36:46 - 中学数学试题微分方程y''-2y'=x的通解.特征方程为:λ^2-2λ=0,得:λ=0,2故y1=c1e^(2x)+c2设y*=ax^2+bxy*'=2ax+by*"=2a代入:2a-2(2ax+b)=x,比较系数得
https://www.ouer.net/chuzhongshuxue/0ddx.html - 2022-11-18 07:57:41 - 中学数学试题求微分方程通解dy/dx=(x-2y+1)/(2x+3y+2).这是典型的可化为齐次方程的方程dy/dx=(x-2y+1)/(2x+3y+2)=((x+1)-2y)/(2(x+1)-3y)设u=y/(x
https://www.ouer.net/chuzhongshuxue/k9x3.html - 2022-07-29 20:32:04 - 中学数学试题求微分方程y''+9y'=x-4的通解请高手帮帮忙.运用微分算子:(D^2+9D)y=x-4故,其特征方程为x^2+9x=0,特征根为0和-9,其对应的七次方程(D^2+9D)y=0的通解为:y=c1+
https://www.ouer.net/chuzhongshuxue/fe63.html - 2022-09-25 04:58:14 - 中学数学试题一道常微分方程题(变量可分离)sin2xdx+cos3ydy=0,.d[-cos2x/2+sin3y/3]=0-cos2x/2+sin3y/3=C2sin3y-3cos2x+C=0.
https://www.ouer.net/gaozhongzz/sf0.html - 2022-02-02 14:16:17 - 中学政治试题求微分方程y'+2xy=2xe(-x2) 的通解..y'+2xy=2xe^(-x^2)y'+2xy=0y'/y=-2x(lny)'=-2xlny=-x^2+C0y=Ce^(-x^2)设y=C(x)e^(
https://www.ouer.net/chuzhongshuxue/sdx5.html - 2022-10-11 18:34:01 - 中学数学试题微分方程(x+1)dy/dx=y-y^2通解在线等,急RT.变量分离dy/(y-y²)=dx/(x+1)dy/y(1-y)=dx/(x+1)[1/y+1/(1-y)]dy=dx/(x+1)积分
https://www.ouer.net/chuzhongshuxue/b6s1.html - 2022-09-16 16:09:25 - 中学数学试题求微分方程y''+y'-y=0的通解.答:特征方程为:r^2+r-1=0所以特征根为:r1=(-1+√5)/2,r2=(-1-√5)/2所以通解为:y=C1e^((-1+√5)/2)+C2e^((-1-
https://www.ouer.net/chuzhongshuxue/0sv8.html - 2022-11-19 20:13:30 - 中学数学试题设z=xy^3-x^2y^6,则在点(1,1)的全微分dz=.z'x=y^3-2xy^6z'y=3xy^2-6x^2y^5x=1,y=1z'x=-1z'y=-3dz=-dx-3dy
https://www.ouer.net/chuzhongshuxue/xn2c.html - 2022-11-09 22:54:32 - 中学数学试题100.求微分方程y`-5y`+6y=2e^x 的通解a a a a a a a.应该是y''-5y`+6y=2e^x吧这样解是y(x) = exp(3*x)*_C2+exp(2*x)*_C1+exp(
https://www.ouer.net/chuzhongshuxue/0eaz.html - 2022-11-23 21:39:15 - 中学数学试题(xy^2-x)dx-(y+yx^2)dy=0,求这个微分方程的通解..y(1+x^2)dy=x(y^2-1)dxydy/(y^2-1)=xdx/(x^2+1)ln|y^2-1|/2=ln|x^2+1|
https://www.ouer.net/zati/hvfn.html - 2022-06-02 19:37:28 - 中学考试杂题微分方程y''-y'=0的通解很着急,谢啦.Y'' - Y' = 0 (1)特征方程:s^2 - s = 0 (2)即:s(s-1)=0 特征根:s1 = 0,s2 = 1 .(1) Y(t) = c1
https://www.ouer.net/chuzhongshuxue/00h9.html - 2022-11-21 02:36:25 - 中学数学试题微分方程y'=xy^2满足初始条件x=0,y=-2的特解为y=.dy/y^2=xdx所以-1/y=x^2/2+c即使y=-2/(x^2+c)y(0)=-2得到c=1y= -2/(x^2+1)
https://www.ouer.net/chuzhongshuxue/sef3.html - 2022-10-17 04:19:31 - 中学数学试题求微分方程y''+y'-2y=0 的通解..设y=e^ax带入y''+y'-2y=0 求导化简得a^2+a-2=0(a-1)(a+2)=0a=1,a=-2通解为y=e^x+e^-2x+c
https://www.ouer.net/chuzhongshuxue/ve6u.html - 2022-11-01 17:32:39 - 中学数学试题微分方程dy/dx=(x²+y²)/2xy,.原式可化为:dy/dx=0.5(x/y)+0.5(y/x)令u=y/x 则y=ux,dy/dx=xdu/dx+u原式变成:xdu/dx+
https://www.ouer.net/chuzhongshuxue/vn3z.html - 2022-10-25 12:27:08 - 中学数学试题微分方程(x+1)y'-2y=0的通解求详细解答过程.
https://www.ouer.net/chuzhongshuxue/xzh4.html - 2022-11-10 02:06:18 - 中学数学试题高数中关于微分方程的通解问题,求xy'-y=x^2的通解,.解法简单我们知道(y/x)'=(xy'-y)/x^2很容易就可以化简成(y/x)'=1所以解就是(y/x)'=x+C;把x乘过来就是y=x^2
https://www.ouer.net/chuzhongshuxue/z83m.html - 2022-05-11 01:19:00 - 中学数学试题求解一道偏微分方程ux+2uy-4u=e^(x+y)边值条件:u(x,4x+2)=0.由于只有一阶偏微分,所以作线性变量代换α=x+y(这是因为等号的右边含有x+y)β=ax+by由链式法则可知∂
https://www.ouer.net/chuzhongshuxue/0s9x.html - 2022-11-19 23:03:22 - 中学数学试题◆微积分 已知二阶线性齐次方程的两个特解为y1 = sinx,y2 = cosx,求该微分方程.已知条件表明,特征方程有一对共轭复根,设为r=a±ib,则知道a=0,b=1,即r=±i于是知道特征方程为
https://www.ouer.net/chuzhongshuxue/09mm.html - 2022-11-23 21:37:53 - 中学数学试题求y=c1e^2x+c2e^3x(c1,c2为任意常数)满足的微分方程.r1=2,r2=3特征方程:(r-2)(r-3)=0即:r^2-5r+6=0所以对应的微分方程为:y''-5y'+6y=0
https://www.ouer.net/chuzhongshuxue/wv3d.html - 2022-11-05 12:58:09 - 中学数学试题怎样用matlab解矩阵是系数的二阶微分方程 A*U"+B*U'+C*U=K. U=dsolve('A*D2U+B*DU+C*U=K')不谢
https://www.ouer.net/shuxue/nz1va.html - 2021-06-28 11:54:21 - 数学作业答案微分方程 (x^2+1)y'+2xy=4x^2.因为[(x^2+1)y]'=2xy+(x^2+1)y'又(x^2+1)y'+2xy=4x^2那么[(x^2+1)y]'=4x^2两边积分得(x^2+1)y
https://www.ouer.net/chuzhongshuxue/u100.html - 2022-10-22 05:38:08 - 中学数学试题常微分方程y''+y'=2-sinx.特征方程:t^2+t=0,t=0,-1通解y1=C1e^0+C2e^(-x)=C1+C2e^(-x)显然y''+y'=2的一个特解为y*1=2x设y''+y'=-sinx
https://www.ouer.net/chuzhongshuxue/0s9b.html - 2022-11-19 23:00:21 - 中学数学试题二元函数 z=cos3xy+ln(1+x+y)的全微分dz=?.
https://www.ouer.net/chuzhongshuxue/cfk2.html - 2022-09-27 11:27:19 - 中学数学试题求微分方程dy/dx+2xy=4x的通解 求大神指教啊.dy/dx+2xy=4xdy/dx=4x-2xy=2x(2-y)dy/(2-y)=2xdx-d(2-y)/(2-y)=dx^2-dln(2-y)=
https://www.ouer.net/chuzhongshuxue/f19.html - 2022-01-30 01:22:12 - 中学数学试题求微分方程y''=e^(2y)的特解 x=0时y=y'=0;写清步骤的加分.如下:不显含x型令y'=p,y"=pdp/dy原微分方程为pdp/dy=e^(2y)即pdp=e^(2y)dy两边积分∫pdp
https://www.ouer.net/chuzhongshuxue/0hfs.html - 2022-11-17 19:20:40 - 中学数学试题一道高数题 微分方程xy'-(1+x^2)y=0的通解?.
https://www.ouer.net/chuzhongshuxue/z84n.html - 2022-05-11 01:24:21 - 中学数学试题微分方程y‘’-y=1的过原点且在该点与直线y=x相切积分曲线是?.y=e^x-1 常数变异法:y=Ae^x+Be^-x-1(A,B待定),过原点:A+B=1,共同切线:A-B=1,解之即得答案.
https://www.ouer.net/chuzhongshuxue/k6kn.html - 2022-07-25 08:37:52 - 中学数学试题求微分方程y″-5y′+6y=xe2x的通解..方程y″-5y′+6y=xe2x的特征方程为:λ2-5λ+6=0,特征根为:λ1=2,λ2=3.因为2是方程的单重特征根,故方程y″-5y′+6y=xe2x
https://www.ouer.net/chuzhongshuxue/d8v1.html - 2022-09-02 05:20:24 - 中学数学试题求微分方程y"-4y导数+ 3y=ex的通解,.y''--4y'+3y=0的特征根是1和3,因此齐次方程的通解是c1e^x+c2e^(3x).考虑非齐次方程的特解.由于右端项e^x是齐次方程的解,因此设特解为
https://www.ouer.net/chuzhongshuxue/xm8n.html - 2022-11-16 21:05:00 - 中学数学试题求微分方程Y``-5Y`+6Y=e^(4x) 的通解..特征方程:r^2-5r+6=0r1=2,r2=3齐次方程:Y``-5Y`+6Y=0的通解是C1*e^(2x)+C2*e^(3x)然后求特解,记特解是
https://www.ouer.net/chuzhongshuxue/n7m4.html - 2022-04-03 23:19:10 - 中学数学试题dy/dx=(xy+3x-y-3)/(xy-2x+4y-8) 微分方程怎么求呀,求教,.dy/dx=(xy+3x-y-3)/(xy-2x+4y-8)=(x-1)(y+3)/(x+4)(y-2)
https://www.ouer.net/chuzhongshuxue/k9n9.html - 2022-07-29 05:32:05 - 中学数学试题求微分方程y''+4y'+3y=0的通解 急.特征方程:t^2+4t+3=0,t=-1,-3所以通解为y=C1e^(-x)+C2e^(-3x)
https://www.ouer.net/chuzhongshuxue/xdm2.html - 2022-11-11 03:13:47 - 中学数学试题求微分方程dy/dx+ycotx=5e^cosx的特解(当x=π/2,y=-4)小白需要详细答案和“最终”结果. wffc11.gif
https://www.ouer.net/chuzhongshuxue/f32.html - 2022-01-30 03:24:08 - 中学数学试题求微分方程y的n次方 - 7y' +10y=0的通解.(1)当n=1时,原方程为y-7y'+10y=0 ==>7y'-11y=0==>dy/y=11dx/7==>n│y│=11x/7+ln│C│ (C是积分常数
https://www.ouer.net/chuzhongshuxue/w37a.html - 2022-11-07 04:58:49 - 中学数学试题求函数y=x^3-x在x=2处当x=0.1时的增量和微分.y=x³-x所以y`=3x²-1,在x0=2处导数值为11y0=2³-2=6dy=y`dxΔy=(2.1³
https://www.ouer.net/chuzhongshuxue/bens.html - 2022-09-17 16:02:45 - 中学数学试题求微分方程dy/dx+3y=8,在满足x=0,y=2 时的特解..dy/dx+3y=8,分离变量得dy/(3y-8)=-dx,ln|y-8/3|/3=-x+c,把x=0,y=2代入得c=(1/3)ln(
https://www.ouer.net/chuzhongshuxue/rzwv.html - 2022-10-03 14:59:55 - 中学数学试题关于二阶常系数齐次线性微分方程的疑问为什么是有2个线性无关的特解,怎么不是3或4或更多个线性无关的特解呢怎么判断它有几个线性无关的特解?.
https://www.ouer.net/chuzhongshuxue/vxw6.html - 2022-10-29 04:11:03 - 中学数学试题微分方程y''+y'=e的x次+cosx的通解,.易得齐次方程通解为C1e^(-x)+C2再求特解设y=Ae^x+Bcosx+Csinx得y'=Ae^x-Bsinx+Ccosx y''=Ae^x-Bcosx-Csinx
https://www.ouer.net/chuzhongshuxue/wu9a.html - 2022-11-05 07:51:09 - 中学数学试题1阶线性微分方程(x^3+y^3)dx-3xy^2dy=0的通解如题.这是一个齐次方程.作代换u=y/x,把y都换成u和x就可以把u解出来了.
https://www.ouer.net/chuzhongshuxue/v2es.html - 2022-10-30 02:34:05 - 中学数学试题求微分方程y''-4y'+4y=0的通解.答:特征方程为:r^2-4r+4=0特征根为r1=r2=2因此所求通解为:y=(C1+C2x)e^(2x)
https://www.ouer.net/chuzhongshuxue/vm4u.html - 2022-11-01 23:34:03 - 中学数学试题微分学中的“方程的近似解”考吗?.从历年的考察情况及考纲来看,您说的两个知识点都是不考的
https://www.ouer.net/chuzhongshuxue/nsdu.html - 2022-03-13 13:53:15 - 中学数学试题为什么三个特解两两相减就可以得到该线性齐次微分方程的通解.这个如同你为什么要吃饭,为什么要绿灯行,数学中就是这么规定的.
https://www.ouer.net/chuzhongshuxue/x9n3.html - 2022-11-16 02:54:35 - 中学数学试题设f(u,v)是可微分函数且z=f(2x+3y,e^xy),则dz=.u=2x+3y,v=e^xydu=2dx+3dy,dy=(xdy+ydx)e^xy偏导数符号打不出来.用p代替吧,dz=(pz/pu
https://www.ouer.net/chuzhongshuxue/vs9b.html - 2022-10-28 04:37:15 - 中学数学试题以y=C1 e^x+C2 x e^(-x)为通解的微分方程y''-2y'+y=0.y=C₁e^x+C₂ x e^(-x)为通解的微分方程y′=C₁e^x+C₂
https://www.ouer.net/chuzhongshuxue/wv3k.html - 2022-11-05 12:58:00 - 中学数学试题数学公式的英文读法如偏微分中的∫Adt,或者某个数的1.7次方,又或者偏A除以偏T.. 1.Logic ∃ there
https://www.ouer.net/shuxue/naf8a.html - 2021-06-20 19:17:17 - 数学作业答案填空.微分方程xy'+y-e的x次方=0的通解为y=.楼上正解y=(e^x+C)/x常数变易法先求xy'+y=0的解y=C/x设y=t(x)/x 则y'=(t/x)'=(t'x+x't)/x^2 代入原等式
https://www.ouer.net/chuzhongshuxue/uf4c.html - 2022-10-19 18:58:00 - 中学数学试题