Find the curvature of the curve r(t).r(t) = (7 + 9 cos 8t) i - (4 + 9 sin 8t)j + 6k
A. ? = 
B. ? = 
C. ? = 
D. ? = 9
Answer: C
Mathematics
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A. 10e-5x B. -5x e10 C. -5x + 10 D. -5x + e10
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Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. 1 B. ? C. 0 D. -1
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Multiply. Simplify the answer completely.11 ? 
A. 77
B. 
C. 
D. 
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Multiply. Write the answer in simplest form.
? 0 ? 
A. 0
B. 
C. 
D. undefined
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