If n is an integer, n ? 180° represents an integer multiple of 180°, and 
represents an odd integer multiple of 90°. Decide whether the expression is equal to 0, 1, -1, or is undefined. cot(n ? 180°)
A. 1
B. Undefined
C. -1
D. 0
Answer: B
Mathematics
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For the given expression y', find y'' and sketch the general shape of the graph of y = f(x). y' = sin x, 0 ? x ? 2?
A. 
B. 
C. 
D. 
Mathematics
Find an equation of variation in which the following are true.y varies jointly as x and w and inversely as z, and y = 
when x = 2, w = 6, and z = 60.
A. y = 4xwz
B. y = 
C. y = 
D. y = 
Mathematics
The hyperbola shown in the calculator-generated graph was graphed in function mode with a square viewing window. What are the two functions y1 and y2 that were used to obtain the graph whose equation is given?
10
-10
A. y1 = 6
, y2 = -6
B. y1 = 
, y2 = - 
C. y1 = 
, y2 = - 
D. y1 = 
, y2 = - 
Mathematics
Find all (a) minors and (b) cofactors of the matrix 
. Show your work.
What will be an ideal response?
Mathematics