MATH 251
Examination I
September 27, 2010
FORM A
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This exam has 14 questions for a total of 100 points. Show all you your work!
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full credit for partial credit problems, all work must be shown. Credit will not be given
for an answer not supported by work. For other problems, points might be deducted,
at the sole discretion of the instructor, for an answer not supported by a reasonable
amount of work.
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number.
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MATH 251
EXAMINATION I
September 27, 2010
1. (8 points) Consider the differential equation
y
0
=
sin
t
y
+
e
y
.
Answer the following questions.
(a) (2 points) Is the equation
linear
?
(b) (2 points) Is the equation
separable
?
(c) (2 points) Is the equation
exact
?
(d) (2 points) Is the equation
autonomous
?
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 Spring '08
 CHEZHONGYUAN
 Math, Differential Equations, Equations, Partial Differential Equations

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