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AP EAMCET · Maths · Differential Equations

The general solution of the differential equation tan(y)dx+sec2(y)·tan(x)dy=0 is

  1. A sin(y)·tan(x)=c
  2. B sin(x)·tan(y)=c
  3. C sin(x)+tan(y)=c
  4. D sin(x)-sin(y)=c
Verified Solution

Answer & Solution

Correct Answer

(B) sin(x)·tan(y)=c

Step-by-step Solution

Detailed explanation

tanydx+(sec2y)(tanx)dy=0 dydx=-tanysec2ytanx On integrating, we get ∫sec2ydytany=∫-cotxdx ln(tany)=-ln(sinx)+c sinxtany=c1