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) = (3 ln(2t))i + (6t3)j
A. a = 
i + 18tj
B. a = 
t-2i + 36tj
C. a = - 
t-2i + 36tj
D. a = - 
i + 36tj
Answer: D
You might also like to view...
Find the least common multiple (LCM) of the pair of numbers.15 and 24
A. 1080 B. 360 C. 15 D. 120
Translate the phrase into a mathematical expression and then find the result.355 gallons less than 1027 gallons
A. 1027 - 355; 662 gallons B. 1027 + 355; 1382 gallons C. 1027 - 355; 672 gallons D. 355 + 1027; 1282 gallons
Simplify the rational expression. If the rational expression cannot be simplified, so state.
A. Cannot be simplified
B. 
C. 
D. 
Solve the problem.The function f(t) = -0.15t2 + 0.53t + 30.4 models the U.S. population in millions, ages 65 and older, where t represents years after 1990. The function g(t) = 0.56t2 + 12.6t + 105.6 models the total yearly cost of Medicare in billions of dollars, where t represents years after 1990. What does the function 
represent? Find 
(10).
A. Cost per person in thousands of dollars. $0.07 thousand B. Cost per person in thousands of dollars. $0.18 thousand C. Cost per person in thousands of dollars. $8.97 thousand D. Cost per person in thousands of dollars. $13.89 thousand