The nth term of a sequence is given. Find the first 4 terms.an = 
A. - 
, - 
, - 
, - 
B. 
, - 
, - 
, - 
C. 
, 
, 
, 
D. 
, - 
, 
, - 
Answer: D
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If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the acceleration vector.r(t) = (6 ln(9t))i + (3t3)j
A. a = 
t-2i + 18tj
B. a = - 
i + 18tj
C. a = 
i + 9tj
D. a = - 
t-2i + 18tj
Find a parametrization for the line segment beginning at P1 and ending at P2.P1(-2, 7, -3) and P2(0, 7, 6)
A. x = -2t, y = 7, z = -9t + 6, 0 ? t ? 1 B. x = 2t - 2, y = 7t, z = 9t - 3, 0 ? t ? 1 C. x = 2t - 2, y = 7, z = 9t - 3, 0 ? t ? 1 D. x = -2t, y = 7t, z = -9t + 6, 0 ? t ? 1
Answer true or false.{8, 16, 24, . . . } ? Rational numbers
A. True B. False
Simplify the rational expression. If the rational expression cannot be simplified, so state.
A. 
B. cannot be simplified
C. 
D. 