If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.r(t) = (cot t)i + (csc t)jFind the velocity vector.
A. v(t) = (-sec2 t)i - (tan t sec t)j
B. v(t) = (sec2 t)i + (tan t sec t)j
C. v(t) = (csc2 t)i + (cot t csc t)j
D. v(t) = (-csc2 t)i - (cot t csc t)j
Answer: D
You might also like to view...
For an election with four candidates (A, B, C, and D) we have the following preference schedule:
Using the Borda count method, which candidate wins the election?
A. A B. B C. C D. D E. none of these
Graph the function, then find the extreme values of the function on the interval and indicate where they occur.y = 
- 
on the interval -? < x < ?
A. 
Absolute maximum is: 6, on the interval [6, ?); absolute minimum is: -6 on the interval (-?,1]
B. 
Absolute maximum is: 7, on the interval [6, ?); absolute minimum is: -7 on the interval (-?, 1]
C. 
Absolute maximum is: 8, on the interval [6, ?); absolute minimum is: -8 on the interval (-?,1]
D. 
Absolute maximum is: 7, on the interval [7, ?); absolute minimum is: -7 on the interval (-?,0]
Find the distance between the pair of points. Round to the nearest tenth if necessary.(-3, 1) and (3, -7)
A. 14
B. 100
C. 10
D. 
? 3.742
Graph the polynomial function. f(x) = -2x3(x - 2)2(x - 1)
A. 
B. 
C. 
D. 