Mathematics · Differential Equations
The general solution of the differential equation y + cos x (dydx) - cos2 x = 0 is:
- 1(sec x + tan x) y = x + cos x + c
- 2(1 + sin x) y = (x + c) cos x - cos2 x
- 3(1 + cos x) y = (x + c) cos x - cos2 x
- 4(sec x + tan x) y = x - sin x + c✓
Correct answer
(sec x + tan x) y = x - sin x + c
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