1. State the order of the following differential equations. Which are linear and nonlinear? dy d²y dy а. dx + 2y2 = 0 e* + 1 d. dx dx² d²y e. 4 dx² d²y b. y + cos x = 0 dy + 3y = 3x + 2 dx2 dx d?y C. dx² – 9y = 0

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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The subject is differential equation

1. State the order of the following differential equations. Which are linear and nonlinear?
dy d²y
dy
а.
dx
+ 2y2 = 0
e* + 1
d.
dx dx²
d²y
d²y
dy
b. y
+ cos x = 0
4
dx2
dx
+ 3y = 3x + 2
е.
dx?
d²y
С.
dx2
– 9y =
Transcribed Image Text:1. State the order of the following differential equations. Which are linear and nonlinear? dy d²y dy а. dx + 2y2 = 0 e* + 1 d. dx dx² d²y d²y dy b. y + cos x = 0 4 dx2 dx + 3y = 3x + 2 е. dx? d²y С. dx2 – 9y =
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