Simplify.
A. 
B. 
C. 
D. 
Answer: A
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If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the velocity vector.r(t) = (cot t)i + (csc t)j
A. v = (-sec2 t)i - (tan t sec t)j B. v = (csc2 t)i + (cot t csc t)j C. v = (-csc2 t)i - (cot t csc t)j D. v = (sec2 t)i + (tan t sec t)j
Find a parametrization for the line segment beginning at P1 and ending at P2.P1(3, 0, -2) and P2(0, 5, 0)
A. x = 3t, y = -5t + 5, z = -2t, 0 ? t ? 1 B. x = -2t, y = -4t + 5, z = 3t, 0 ? t ? 1 C. x = -3t + 3, y = 5t, z = 2t - 2, 0 ? t ? 1 D. x = -2t + 3, y = -4t, z = 3t - 2, 0 ? t ? 1
Divide.
A. 305 B. 320 R 24 C. 315 D. 325 R 32
Solve the polynomial inequality. Express the solution using interval notation.2x2 - 5x ? 7
A. (-?, -1] ?
B. 
C. (-?, -1) ? 
D. 