Write the complex number in polar form. Express the argument ? in degrees, with 0 ? ? ? 360°.2
- 2i
A. 4(cos 30° + i sin 30°)
B. 4(cos 150° + i sin 150°)
C. 4(cos(330°) + i sin(330°))
D. 4(cos(-60°) + i sin(-60°))
Answer: C
Mathematics
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A. 64
B. 
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D. 
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Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. 2x + y + 2z - 4w = 10x + 3y + 2z - 11w = 173x + y + 7z - 21w = 0
A. {(w + 5, 8w + 4, -3w - 2, w)} B. {(3w + 5, 6w + 6, -4w - 3, w)} C. {(-3w + 5, 2w + 6, 4w - 3, w)} D. {(w - 5, 8w - 4, -3w + 2, w)}
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Simplify the expression.
A. undefined B. 79 C. 1 D. 0
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If m and n are integers, is 6m2 + 34n ? 18 an even integer? Justify your answer.
What will be an ideal response?
Mathematics