Use a graphing utility to find the sum of the geometric sequence. Round answer to two decimal places, if necessary.-5 - 15 - 45 - 135 - 405 - ... - 5 ? 39
A. -147,618
B. -147,583
C. -147,640
D. -147,620
Answer: D
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The vector r(t) is the position vector of a particle at time t. Find the angle between the velocity and the acceleration vectors at time t = 0.r(t) = (4t2 + 6)i + (3t3 - 3t)k
A. 0
B. ?
C. 
D. 
The autonomous differential equation represents a model for population growth. Use phase line analysis to sketch solution curves for P(t), selecting different starting values P(0). Which equilibria are stable, and which are unstable?
= P(P - 3)
What will be an ideal response?
Decide whether or not the given equation is an identity.
= 
A. Yes B. No
Give a geometric description of the set of points whose coordinates satisfy the given conditions. x2 + y2 + z2 > 16
A. All points in space B. All points on the surface of the cylinder with radius 4 C. All points outside the cylinder with radius 4 D. All points outside the sphere of radius 4