y" + 4y = 3x³. The (familiar) complementary solution of Eq. (5) is 12 cos 2x + co sin 2 r (5)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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The textbook says that this is familioar, but I can't find anywhere where it is explained. Can you please explain this? Thank you.

3x³.
y" + 4y
The (familiar) complementary solution of Eq. (5) is
ye(x) = C₁ cos 2x + c₂ sin 2x.
(5)
Transcribed Image Text:3x³. y" + 4y The (familiar) complementary solution of Eq. (5) is ye(x) = C₁ cos 2x + c₂ sin 2x. (5)
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