Multiple choice

The general solution of the differential equation $\frac{dy}{dx}$ = cos(x + y), with c as a constant, is

  1. y + sin(x + y) = x + c
  2. $tan \Big(\frac{x + y}{2}\Big) = y + c$
  3. $cos \Big(\frac{x + y}{2}\Big) = x + c$
  4. $tan \Big(\frac{x + y}{2}\Big) = x + c$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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