Exercise. Find the result of the operations indicated in each of the following problems using formulas (F-01) to (F-05). 3. (D² – D + 3)(x In x) 4. (D² – 3D + 4)(ex cos 2x)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Exercise. Find the result of the operations indicated in each of the following problems using
formulas (F-01) to (F-05).
3. (D² – D+ 3)(x In x)
4. (D² – 3D + 4)(e* cos 2x)
Transcribed Image Text:Exercise. Find the result of the operations indicated in each of the following problems using formulas (F-01) to (F-05). 3. (D² – D+ 3)(x In x) 4. (D² – 3D + 4)(e* cos 2x)
The following formulas for operators may be proven by mathematical induction:
F-01. D"eаx 3 а"еах
F-02. Ф(D)eax %3D Ф(а)еах
F-03. D"(eax)n %3 еаx (D + a)"и
=
F-04. Ф(D)(eaxи) — е ах Ф(D + a)и
F-05. (D — a)"(е ах и) %—D еах D"и
Transcribed Image Text:The following formulas for operators may be proven by mathematical induction: F-01. D"eаx 3 а"еах F-02. Ф(D)eax %3D Ф(а)еах F-03. D"(eax)n %3 еаx (D + a)"и = F-04. Ф(D)(eaxи) — е ах Ф(D + a)и F-05. (D — a)"(е ах и) %—D еах D"и
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