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
Answer: D
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True or false?In Euclidean geometry, if two triangles have different side lengths, they cannot have identical angles.
A. True B. False
Identify equilibrium values and determine which are stable and which are unstable.
= (y + 3)(y + 2)
A. y = -3 is a stable equilibrium value and y = 2 is an unstable equilibrium. B. y = -2 is a stable equilibrium value and y = 3 is an unstable equilibrium. C. y = 3 is a stable equilibrium value and y = 2 is an unstable equilibrium. D. y = 2 is a stable equilibrium value and y = -3 is an unstable equilibrium.
Determine whether the graph of the equation is a circle or an ellipse.9x2 + 90x + 25y2 - 50y + 25 = 0
A. Circle B. Ellipse
Graph the inequality.x2 + y2 > 16
A. 
B. 
C. 
D. 