Find the limit.
e-x2 - y2
A. 1
B. 0
C. e-8
D. e8
Answer: C
Mathematics
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 5 cos 2t + 4 cos 6t, y = 5 sin 2t - 4 sin 6t, 0 ? t ? ?
A. 
B. 
C. 
D. 
Mathematics
Find the curvature of the space curve.r(t) = -3i + (t + 10)j +(ln(cos t) + 1)k
A. ? = sec t B. ? = csc t C. ? = sin t D. ? = cos t
Mathematics
Determine the symmetries of the curve.r = -5 - 3 sin ?
A. y-axis only B. Origin only C. No symmetry D. x-axis only
Mathematics
pis in dollars andqis the number of units. Find the elasticity of the demand function 
at 
. Round your answer to two decimal places.
A. 3.07 B. 0.33 C. -0.33 D. 1.00 E. -1.00
Mathematics