Find the sum of the indicated terms of the geometric sequence.
6, 18, 54 ... (to 8 terms)
a. s = 19,686
b. s = 19,692
c. s = 19,680
d. s = 19,674
c. s = 19,680
The sum of the first 8 terms of the given geometric sequence is 19,680.
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Evaluate the integral by using multiple substitutions.
dx
A. 
sin6 (x3 - 3x)+ C
B. 
cos6 (3x2) + C
C. 40 sin4 (x3 - 3x) + C
D. 
sin6 (x3 - 3x) + C
Find an upper bound for the magnitude |E| of the error in the linear approximation L to f at the given point over the given region.
at 
R: |x - 1| ? 0.1, |y + 2| ? 0.1, |z - 3| ? 0.1
A. |E| ? 0.48 B. |E| ? 0.36 C. |E| ? 0.54 D. |E| ? 0.72
Your weekly cost (in dollars) to manufacture x cars and y trucks is
?
?
What is the marginal cost of a truck?
?
A. $6,000 B. $4,000 C. $2,000 D. $244,000 E. $246,000
Find the second-order partial derivative.Find fxy when f(x,y) = 10x2y4 - 7x3y5.
A. 80xy3 - 105x2y4 B. 80xy3 - 21x2y4 C. 160xy3 - 21x2y4 D. 160xy3 - 105x2y4