The number is increased by 10% in 2
hours In how many hours will the count reach 2,00,000, if the rate of growth of
bacteria is proportional to the number present 23 The general solution of the differential equation 
x
y
dy
e
dx
+
=
 is
(A) ex + e–y = C
(B) ex + ey = C
(C) e–x + ey = C
(D) e–x + e–y = C
9