Find the sum if it exists.
A. 
B. - 
C. - 
D. Does not exist
Answer: D
Mathematics
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Express the given complex number in polar form.5.15e-4.53j
A. 
B. 
C. 
D. 
Mathematics
Determine the values of x for which the function is differentiable.y = 
A. All real numbers except -3 B. All real numbers except 3 C. All real numbers D. All real numbers except 7
Mathematics
Use integration by parts to establish a reduction formula for the integral.
A. 
= - 2xn-1 e- x2 - 2(n - 1) 
B. 
= n xn-1 e- x2 + 2n 
C. 
= - 
xn e- x2 + 
D. 
= - 
xn-1 e- x2 + 
Mathematics
Factor completely.729y3 - 343
A. (9y - 7)(81y2 + 63y + 49) B. (9y - 7)3 C. (9y + 7)(81y2 - 63y + 49) D. (9y - 7)(81y2 + 49)
Mathematics