Find 
. Write your answer in standard polar form with the argument in radians.z1 = 5(cos 200° + i sin 200°), z2 = 4(cos 50° + i sin 50°)
A. 
(cos 150° - i sin 150°)
B. 
(sin 150° + i cos 150°)
C. 
(cos 250° + i sin 250°)
D. 
(cos 150° + i sin 150°)
Answer: D
Mathematics
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A. x + 3
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that is closest to the parabola 
Use the fact that the line connecting the closest points on each curve is normal to both curves.
A. 
B. 
C. 
D. 
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Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. ?(9 ln 10 - 9) B. ?(10 ln 10 + 9) C. ?(10 ln 10 - 9) D. ?(9 ln 10 + 9)
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A function and its first and second derivatives are given. Use these to find any relative maxima.
A. 
B. 
C. 
D. 
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