Form the differential equation of the family of circles having centre on y-axis
and radius 3 units 11 Which of the following differential equations has y = c1 ex + c2 e–x as the general
solution (A)
2
2
0
d y
y
dx
+
=
(B)
2
2
0
d y
y
dx
−
=
(C)
2
2
1
0
d y
dx
+ =
(D)
2
2
1
0
d y
dx
− =
12