Use the method of undetermined coefficients to solve the differential equation.
- 9 
+ 18y = -13 - ex; 
= 
and y = - 
when x = 0
A. y = - 
e3x + 
e6x - 
+ 
ex
B. y = - 
e3x + 
e6x + 
- 
ex
C. y = - 
e3x + 
e6x - 
- 
ex
D. y = - 
e3x - 
e6x - 
- 
ex
Answer: C
Mathematics
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