Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the y-axis.y = 
, y = 0, x = 5, x = 7
A. 18?
B. 6?
C. 9?
D. 12?
Answer: D
Mathematics
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Find the curvature of the space curve.r(t) = -9i + (4 + 2t)j + (t2 + 7)k
A. ? = 
B. ? = - 
C. ? = 
D. ? = 
Mathematics
Tell whether the statement is true or false. If false, give the reason.16 ? {15, 13, 12, . . ., 1}
A. False; 16 is an element of the set. B. False; 16 is smaller than the elements of the set. C. False; 16 is a set. D. True
Mathematics
Multiply and simplify. Assume variables do not cause any denominators to equal 0.
? 
A. 
B. 
C. 
D. 
Mathematics
Find zw or 
as specified. Leave your answer in polar form.z = 6
w = 12
Find 
.
A. 
B. 
C. 
D. 
Mathematics