Danang University of Technology
MATH307/MTH256 MIDTERM EXAM
Classes: 12ECE & 12ES
Time allowed: 90 minutes
dx
x cot t 1, x t 2 0 0 t .
dt
2) (2.5 pts). Find an integrating factor of the form ( y x) a
Danang University of Technology
MATH307 MIDTERM EXAM
Class: 10ECE
Time allowed: 120 minutes
dy
2 y sin x, y x 2 0 x 0 .
dx
2) (2.5 pts). Find an integrating factor of the form ( y ) and solve the ODE
Danang University of Technology
MATH307 MIDTERM EXAM
Class: 09ECE
Time allowed: 120 minutes
dy
p
p
- y tan x =1, y (0) =0 <x <
.
dx
2
2
2) (2.5 pts). Find an integrating factor of the form m( xy ) an