Mathematics · Differential Equations
The complementary function (CF) of the differential equation d2y/dx2 + 4y = cos(x) is __________.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1e-2x (C1 cos(2x) + C2 sin(2x))
- 2C1 cos(2x) + C2 sin(2x)✓
- 3C1 cos(2ix) + C2 sin(2ix)
- 4e2x (C1 cos(2x) + C2 sin(2x))
Correct answer
C1 cos(2x) + C2 sin(2x)
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