The position vector of a particle is r(t). Find the requested vector.The velocity at t = 0 for r(t) = ln (t3 - 5t2 + 4)i - 
j - 5 cos (t)k
A. v(0) = 
i - 
j + 5k
B. v(0) = - 
j
C. v(0) = 
j
D. v(0) = 
i - 
j
Answer: B
You might also like to view...
For f(x) = A sin 
+ D,identify either A, B, C, or D as indicated for the sine function.y = 5 cos 
Find A.
A. 3
B. 5
C. 15
D. 
In the energy demand problem above, the demand vectors could be represented in a 2 row matrix, where row 1 contains the energy demands of the consumers and row 2 contains the energy demands of the energy industries:D = 
A researcher is studying the effects on the local economy of changes in the original demand matrix. He models one change by the matrix equation D1 = D + 0.5D. Calculate the new demand matrix in his model.
What will be an ideal response?
Choose the appropriate sketch and description for the indicated geometric object.Right ?ABC
A. 
, 
, 
have different lengths; ?B = 90°
B. 
, 
, 
are the same length
C. 
, 
, 
have different lengths
D. 
, 
are the same length
Simplify.
A. 
B. 
C. 
D. 