The position vector of a particle is r(t). Find the requested vector.The velocity at t = 0 for r(t) = cos(2t)i + 10ln(t - 3)j - 
k
A. v(0) = 2i - 
j
B. v(0) = -
j
C. v(0) = -2i - 
j
D. v(0) = 
j
Answer: B
You might also like to view...
Solve.2x2 = 5x + 7
A. 
, 0
B. 
, 1
C. 
, -1
D. 
, -1
Find the area of the shaded region. (Assume that given measurements are exact, and round approximate answers to the nearest tenth of a square unit.)
?
, 
?
A. ?16 ft2
B. ?4 ft2
C. 10? ft2
D. ?8 ft2
E. ?20 ft2
The pressure P, in lb/ft2 , a liquid exerts at a given point on a submarine is directly proportional to the depth d, in feet, of the point below the surface of the liquid. When a given point is 3 ft below the surface of the liquid, the pressure is 187.5 lb/ft2 . Find an equation of variation expressing P as a function of d.
What will be an ideal response?
Find all cube roots of the complex number. Leave answers in trigonometric form.4 - 4i
A. 
cis 100°, 
cis 220°, 
cis 340°
B. 
cis 60°, 
cis 180°, 
cis 300°
C. 
cis 80°, 
cis 200°, 
cis 320°
D. 
cis 100°, 
cis 220°, 
cis 340°