Find the curvature of the curve r(t).r(t) = (9 + ln(sec t))i + (7 + t)k, -?/2 < t < ?/2
A. ? = cos t
B. ? = -cos t
C. ? = 1 - cos t
D. ? = sin t
Answer: A
Mathematics
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A. 2 B. 4 C. 3 D. 1
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Suppose that y is inversely proportional to x. Use the given information to find the constant of proportionality k. Then use y = 
to find y for the given value of x.y = 12.5 when x = 5;
Find y given x = 25.
A. k = 62.5; y = 2.5 B. k = 70; y = 2.8 C. k = 2.5; y = 62.5 D. k = 55; y = 2.2
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Find the nth, or general, term.1, 9, 81, . . .
A. 9n-1 B. 9n C. 91-n D. 9(n - 1)
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Provide an appropriate response.Write a "volume" word problem for which finding the solution would involve evaluating the double integral
What will be an ideal response?
Mathematics