Show that the given function is a solution of the differential equation. y" + 25y = 0, y = cos(5x) + 5 sin(5x) Substituting y" and y into the original equation gives + 25(cos(5x) + 5 sin(5x)) = 0. The so

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Show that the given function is a solution of the differential equation:

y'' + 25y = 0,  y = cos(5x) + 5 sin(5x)

**Please see attachment

Show that the given function is a solution of the differential equation.

\[ y'' + 25y = 0, \quad y = \cos(5x) + 5 \sin(5x) \]

\[ y'' = \boxed{} \]

Substituting \( y'' \) and \( y \) into the original equation gives

\[ \boxed{} + 25(\cos(5x) + 5 \sin(5x)) = 0. \] The solution checks.
Transcribed Image Text:Show that the given function is a solution of the differential equation. \[ y'' + 25y = 0, \quad y = \cos(5x) + 5 \sin(5x) \] \[ y'' = \boxed{} \] Substituting \( y'' \) and \( y \) into the original equation gives \[ \boxed{} + 25(\cos(5x) + 5 \sin(5x)) = 0. \] The solution checks.
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