Find the general solution for the differential equation.
+ 2xy = 21x
A. y = 
+ Cex2
B. y = 
+ Ce-x2
C. y = 21 + Cex2
D. y = 
+ 2x + Ce-x2
Answer: B
Mathematics
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A. f-1(x) = ln (3) - ln (x) B. f-1(x) = -ex - 3 C. f-1(x) = ex - 1/3 D. f-1(x) = -ln (x - 3)
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Find the unknowns on the right side of the partial fraction decomposition.
= 
+ 
A. A = - 
, B = 
, C = - 
B. A = - 
, B = - 
, C = 
C. A = 
, B = 
, C = - 
D. A = 
, B = - 
, C = 
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