Decide whether integration by parts or substitution should be used to compute the indefinite integral 
dx If substitution, indicate the value of u; if by parts, indicate f(x) and g(x).
A. substitution; u = 
B. substitution; u = x-2
C. integration by parts; f(x) = -e1/x, g(x) = 
D. integration by parts; f(x) =- 
, g(x) = e1/x
E. none of these
Answer: A
Mathematics
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