Use a half-number identity to find an exact value for the function, given the information about x.cos 
, given cos x = - 
, with ? < x < 
A. 
B. - 
C. 
D. - 
Answer: D
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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = sin 5yi + cos 5xj; C is the rectangle with vertices at (0, 0), 
, 
, and 
A. 0
B. - 
?
C. 
?
D. - 
?
Tell which set or sets each number belongs to: natural, whole, integer, rational, irrational, real.
A. Real, irrational B. Real, rational, integer C. Real, rational D. Real
Find the transverse axis, vertices, and foci of the hyperbola.
- 
= 1
A. transverse axis is x-axis
vertices at (-10, 0) and (10, 0)
foci at (- 2
, 0) and (2
, 0)
B. transverse axis is x-axis
vertices at (-8, 0) and (8, 0)
foci at (-10, 0) and (10, 0)
C. transverse axis is y-axis
vertices at (0, -8) and (0, 8)
foci at (0, - 2
) and (0, 2
)
D. transverse axis is x-axis
vertices at (-8, 0) and (8, 0)
foci at (- 2
, 0) and (2
, 0)
Evaluate the improper integral or state that it is divergent. 
A. - 
ln 2
B. 
ln 5
C. ln 2
D. ln 4