Express the sum using summation notation. Use a lower limit of summation not necessarily 1 and k for the index of summation.(a + 1) + (a + b) + (a + b2) + . . . + (a + bn)
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Calculate the flux of the field F across the closed plane curve C.F = y2i + x3j; the curve C is the closed counterclockwise path formed from the semicircle 
0 ? t ? ?, and the straight line segment from (-4, 0) to (4, 0)
A. 64 B. 0 C. - 32 D. 32
Mathematics
Find the divergence of the field F.F = -15xz2i + 11yj + 5z3k
A. -30z2 B. 11 C. -15z2 + 11 D. -30z2 + 11
Mathematics
Find the product.(0.5 + 9a)(0.4 + 7a)
A. 0.2 + 7.1a + 63a2 B. 0.2 - 7.1a + 63a2 C. 0.2 + 7.1a + 0.63a2 D. 2 + 7.1a + 63a2
Mathematics
Solve the problem.Consider the sequence AN defined by A1 = 5, A2= 5, AN = AN-1 + AN-2. As the values of N get large, the ratios AN+1/AN approach
A. ?. B. 25?. C. ? + 5. D. 5?. E. none of these
Mathematics