The position vector of a particle is r(t). Find the requested vector.The velocity at t = 3 for r(t) = (3 - 5t2)i + (5t + 8)j - e-5tk
A. v(3) = -30i + 5j - 5e-15k
B. v(3) = -30i + 5j + 5e-15k
C. v(3) = 30i + 5j + 5e-15k
D. v(3) = -15i +5j + 5e-15k
Answer: B
Mathematics
You might also like to view...
Construct a truth table for the statement. Then determine if the statement is a tautology.(q ? p) ? (~ p ? q)
A. 
Is not a tautology.
B. 
Is not a tautology.
C. 
Is not a tautology.
D. 
Is a tautology.
Mathematics
Add or subtract as indicated. Express the answer as a single polynomial in standard form.(5x6 - 6x4 + 7x) + (2x6 + 3x4 - 4x)
A. 7x11 B. 7x - 3x6 + 3x4 C. 9x6 + 8x4 - 10x D. 7x6 - 3x4 + 3x
Mathematics
Find the area of the polygon.
A. A = 65 in.2 B. A = 270 in.2 C. A = 280 in.2 D. A = 275 in.2
Mathematics
Multiply and write answer in lowest terms.
× 
A. 
B. 
C. 
D. 
Mathematics