Parametrize the surface S.S is the portion of the cone 
+ 
= 
that lies between z = 2 and z = 5.
What will be an ideal response?
Answers will vary. One possibility is r = r cos ?i + r sin ?j + 
rk , 
? r ? 
, 
Mathematics
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Find the difference.7 - 9
A. 16 B. 2 C. -16 D. -2
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Find all cube roots of the complex number. Leave answers in trigonometric form.-125
A. 5 cis 180°, 5 cis 0° B. 5 cis 60°, 5 cis 180°, 5 cis 300° C. 5 cis 120°, 5 cis 180°, 5 cis 300° D. 5 cis 30°, 5 cis 150°, 5 cis 270°
Mathematics
Find the common ratio for the geometric sequence.
, 
, 
, 
, 
, . . .
A. 
B. 4
C. not geometric
D. 10
Mathematics
Use identities to write the expression as a function of x alone.cos (x + 270°)
A. -sin x B. cos x C. sin x D. -cos x
Mathematics