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133A Quiz 0
Fall 2009
R. K. Dodd
This is an example of the quiz you will get next Tuesday. Please do not hand in the solutions to this
example sheet.
You MUST (a) write your answers on the question sheet, (b) attach any scratch sheets you have
used to arrive at your answers. If there is no work associated with a problem except for problem 1,
then you will get 0 for the answer even if it is correct.
NAME:
1. Indicate by ticking in the appropriate column, which of the following equations are linear or nonlinear.
Include in the order column the order of each equation.
linear
nonlinear
order
(dy/dx)
2
y + dy/dx + cos(y
2
) = 0
dy/dx + d
5
y/dx
5
+ y
2
= 0
d
2
y/dx
2
+ cos(dy/dx) + x
5
= 0
dy/dx + y = cos(x)
2. Integrate
Write the answer here (omit the constant of integration).
Ans.
3. Determine whether the given function is a solution of the given ode. Tick the appropriate column (0
marks if work is not on scratch)
solution
nonsolution
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 Fall '08
 OBAID
 Calculus, Derivative, Taylor Series, appropriate column, R. K. Dodd

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