Simplify the expression. Assume that all variables are positive when they appear.
A. 
- 
B. 
C. 
D. 
Answer: B
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Let u be the vector with initial point P(7,-3) and terminal point Q(1,4). Express u in terms of I and j.
a. u = -6i + 6j b. u = -6i + 7j c. u = -3i - 2j d. u = -6i + j e. none
Find the derivative of the function.y = cos5(?t - 15)
A. 
= - 5? cos4(?t - 15) sin(?t - 15)
B. 
= - 5? sin4(?t - 15)
C. 
= - 5 cos4(?t - 15) sin(?t - 15)
D. 
= 5 cos4(?t - 15)
Provide an appropriate response.Graph the equations y = 2x + 1 and y = 2x + 3 on the same set of axes. These are parallel lines. Define parallel. How might one determine that these lines were parallel by examining the equations, but without actually graphing them?
What will be an ideal response?
The graph of a rational function y = f(x) is given below. Use the graph to give the solution set of 
and 
Use set notation for part (a) and interval notation for parts (b) and (c).
A. (a) {0} (b) (-?, 1.4) ? (1.4, ?) (c) (-1.4, 1.4) B. (a) {0,-?, ?} (b) (-?, 0) (c) (0, ?) C. (a) {0} (b) (-?, 0) (c) (0, ?) D. (a) {0} (b) (-?, 0] (c) [0, ?)