MATH UN1102 Chapter 7: E2101_HW07_Solutions

11 views6 pages

Document Summary

Homework 07 y y y + y = 0 r3 r2 r + 1 = 0. R2(1 r) + (1 r) = 0 (1 r)(1 r2) = 0 = r = 1, 1 y(t) = c1et + c2e t + c3tet. 2r(r2 1) 4(r2 1) = 0. 2(r 2)(r2 1) = 0 = r = 2, 1 y(t) = c1e2t + c2et + c3e t. Problem 4. 2. 3. r6 3r4 + 3r2 1 = 0. Let u = r2. u3 3u2 + 3u 1 = 0 (u 1)3 = 0 = r = 1 y(t) = c1et + c2e t + c3tet + c4te t + c5t2et + c6t2e t. Problem 4. 3. 1. y(4) y = 3t + cos(t) The homogeneous solution is r4 1 = 0 = r = 1, i y = c1 sin(t) + c2 cos(t) + c3et + c4e t. The particular solution is split into two - a polynomial and a trigonometric portion.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related textbook solutions

Related Documents

Related Questions