thon of parameters works for higher-order nonhomogeneous linear differential equations too. problem shows you how to solve y" + P(1)y" + QU)y + R()y = g(1). t y,(), y2(), and y,(1) be three linearly independent solutions to the homogeneous quation y" + P(t)y" + Q(M)y + R¢)y = 0. hen assume that a particular solution is of the form (1) = 4,(1)y,(1) + u;(1)y2(1) + us(1)ys(t). ow solve the following system of linear equations for ư,(1), u,(1), and u'(1): ( u,yn + u,yz + u;ys == 0 lu,x" + u,y% + u,y% = g(1) he first two equations are clever assumptions, and the last equation comes from plugging = u1 yı + usy2 + u;3% into the nonhomogeneous equation.) nce you have , (1), ư,(1), and ư',(1) then integrate to find u, (1), uz(1), and u,(1). Then STION: e this order-three version of variation of parameters to find the general solution: y" +2y" – y – 2y = e'
thon of parameters works for higher-order nonhomogeneous linear differential equations too. problem shows you how to solve y" + P(1)y" + QU)y + R()y = g(1). t y,(), y2(), and y,(1) be three linearly independent solutions to the homogeneous quation y" + P(t)y" + Q(M)y + R¢)y = 0. hen assume that a particular solution is of the form (1) = 4,(1)y,(1) + u;(1)y2(1) + us(1)ys(t). ow solve the following system of linear equations for ư,(1), u,(1), and u'(1): ( u,yn + u,yz + u;ys == 0 lu,x" + u,y% + u,y% = g(1) he first two equations are clever assumptions, and the last equation comes from plugging = u1 yı + usy2 + u;3% into the nonhomogeneous equation.) nce you have , (1), ư,(1), and ư',(1) then integrate to find u, (1), uz(1), and u,(1). Then STION: e this order-three version of variation of parameters to find the general solution: y" +2y" – y – 2y = e'
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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