Find the particular solution of the differential equation (1 + e2x) dy + (1 + y2) ex dx = 0, given that y = 1 when x = 0.
It is given that (1 + e2x) dy + (1 + y2) ex dx = 0
On integrating both sides, we get,
------(1)
Let ex = t
⇒ e2x = t2
⇒ exdx = dt
Substituting the value in equation (1), we get,
⇒ tan-1 y + tan-1 t = C
⇒ tan-1 y + tan-1 (ex) = C -------(2)
Now, y =1 at x = 0
Therefore, equation (2) becomes:
tan-1 1 + tan-1 1 = C
Substituting in (2), we get,
tan-1 y + tan-1 (ex) =