If the population of the village was
20, 000 in 1999 and 25000 in the year 2004, what will be the population of the
village in 2009 16 The general solution of the differential equation 
0
y dx
−yx dy
=
 is
(A) xy = C
(B) x = Cy2
(C) y = Cx
(D) y = Cx2
17 The general solution of a differential equation of the type 
1
1
P
Q
dx
x
dy +
=
 is
(A)
(
)
1
1
P
P
Q1
C
dy
dy
y e
e
dy
∫
∫
=
+
∫
(B)
(
)
1
1
P
P
1