For the curve r(t), write the acceleration in the form aTT + aNN.r(t) = (2t sin t + 2 cos t)i + (2t cos t - 2 sin t)j + 7k
A. a = 2T + 2tN
B. a = 
N
C. a = 2T + 
N
D. a = 2tN
Answer: A
Mathematics
You might also like to view...
State whether the fractions are equal or not equal.
, 
A. Equal B. Not equal
Mathematics
Evaluate.(-12)0 + (-4)0
A. -2 B. 0 C. 2 D. -16
Mathematics
Determine whether the graph of the equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.y = 2x2 + 4
A. y-axis B. origin C. x-axis D. x-axis, y-axis, origin E. none
Mathematics
Solve the problem.The current I, in amperes, flowing through a particular ac (alternating current) circuit at time t seconds is I = 110 sin 
What is the period of the current?
A. 
second
B. 
second
C. 35? seconds
D. 
second
Mathematics