1. (3ху + Зу — 4)dx + (х + 1)2 dy %3D 0

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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In each exercise, find a set of solutions unless the statement of the exercise stipulates
otherwise. Use any method.
1. (3ху + Зу — 4)dx + (x + 1)2 dy %3D 0
2. (x + y) dx + x dy = 0
3. у?dx — x(2х + Зу)dy %3D 0
4. (x² + l)dx + x² y²dy = 0
5. y' = x³ – 2xy; when x =
-1– 2r cos0
3D1; у %3D2
-
dr
6. sin@
de
dx
7.
= cosx cos²t
dt
8. у(х + Зу) dx + x? dy %3D 0
9. Зх 3 y' %3D 2у(у — 3).
-
10.dy
dx
= sec? x sec3 y
11.xy(dx – dy) = x² dy + y² dx
12. (y – sin? x) dx + sin x dy = 0
13. (y? — Зу — х) dx + (2y — 3) dy 3D 0
14. (y3 + y + 1)dx + x(x – 3y? – 1)dy = 0
15. (х + 3у — 5)dx — (х — у — 1) dy %3D 0
16.(x5 – y² )dx + 2xy dy = 0
17.(2х + у — 4)dx + (x — 3у + 12)dy 3D 0
18. (y³sec? xdx – (1– 2y² tanx)dy = 0
19.x³ ydx + (3x* – y³ )dy = 0
20.dy/dx
21.(6ху — Зу? + 2y) dx + 2(х — у) dy %3D 0
22.(х — 2) dx + 4(х + у— 1) dy %3D 0
23. (sin y – y sin x)dx + (cosx + x cos y)dy = 0
24. (1+ 4xy – 4x²y)dx + (x² – x³ )dy = 0; when x =
25. (2y cosx + sin* x)dx = sin x dy , when x =,y = 1
-
|
-
%3D
= tan y cot x – sec y cosx
-
2, y =
-
Transcribed Image Text:In each exercise, find a set of solutions unless the statement of the exercise stipulates otherwise. Use any method. 1. (3ху + Зу — 4)dx + (x + 1)2 dy %3D 0 2. (x + y) dx + x dy = 0 3. у?dx — x(2х + Зу)dy %3D 0 4. (x² + l)dx + x² y²dy = 0 5. y' = x³ – 2xy; when x = -1– 2r cos0 3D1; у %3D2 - dr 6. sin@ de dx 7. = cosx cos²t dt 8. у(х + Зу) dx + x? dy %3D 0 9. Зх 3 y' %3D 2у(у — 3). - 10.dy dx = sec? x sec3 y 11.xy(dx – dy) = x² dy + y² dx 12. (y – sin? x) dx + sin x dy = 0 13. (y? — Зу — х) dx + (2y — 3) dy 3D 0 14. (y3 + y + 1)dx + x(x – 3y? – 1)dy = 0 15. (х + 3у — 5)dx — (х — у — 1) dy %3D 0 16.(x5 – y² )dx + 2xy dy = 0 17.(2х + у — 4)dx + (x — 3у + 12)dy 3D 0 18. (y³sec? xdx – (1– 2y² tanx)dy = 0 19.x³ ydx + (3x* – y³ )dy = 0 20.dy/dx 21.(6ху — Зу? + 2y) dx + 2(х — у) dy %3D 0 22.(х — 2) dx + 4(х + у— 1) dy %3D 0 23. (sin y – y sin x)dx + (cosx + x cos y)dy = 0 24. (1+ 4xy – 4x²y)dx + (x² – x³ )dy = 0; when x = 25. (2y cosx + sin* x)dx = sin x dy , when x =,y = 1 - | - %3D = tan y cot x – sec y cosx - 2, y = -
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