1
1
0
x
x
y
y
x
e
dx
e
dy
y
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
For each of the differential equations in Exercises from 11 to 15, find the particular
solution satisfying the given condition:
11 (x + y) dy + (x – y) dx = 0; y = 1 when x = 1
12 x2 dy + (xy + y2) dx = 0; y = 1 when x = 1
13 sin2
0;
4
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
y
x
y dx
x dy
y
x
 when x = 1
14