Mathematics · Differential Equations
y = 4cos(3x) is a solution of which of the following differential equations?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1dydx + 3y = 0
- 2dydx - 3y = 0
- 3d2ydx2 - 9y = 0
- 4d2ydx2 + 9y = 0✓
Correct answer
d2ydx2 + 9y = 0
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