Write the complex number in the form a + bi.
(cos 315° + i sin 315°)
A. 
- 
i
B. 
- 
i
C. 
- 
i
D. 
- 
i
Answer: D
Mathematics
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Sketch D and g(D) from the description of D and change of variables 
x = u2 - v2, y = 2uv where D is the rectangle 0 ? u ? 1, 0 ? v ? 1
A.
 ? |  |
B. None of these.
C.
 ? |  |
D.
 ? |  |
Mathematics
Sketch the graph of the function.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics
Find the relative extrema of the function and classify each as a maximum or minimum.s(x) = -x2 - 8x + 65
A. Relative maximum: (4, 81) B. Relative maximum: (-8, 65) C. Relative maximum: (-4, 81) D. Relative minimum: (8, 65)
Mathematics
Perform the indicated operation.-5 ? (-5)
A. -30 B. -25 C. 30 D. 25
Mathematics