defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Differential Equations Solution of Differential Equations
The solution of differential equation cos(x + y) dy = dx is given by
1
\(y = x\sec \left( {\frac{y}{x}} \right) + c\)
2
\(y + {\cos ^{ - 1}}\left( {\frac{y}{x}} \right) = c\)
3
\(y = \tan \left( {\frac{{x + y}}{2}} \right) + c\)
4
\(y = \cot \left( {\frac{{x + y}}{2}} \right) + c\)