Graph the ellipse and locate the foci.
+ 
= 1
A. foci at (
, 0) and (-
, 0)
B. foci at (2
, 0) and (-2
, 0)
C. foci at (0, 
) and (0, -
)
D. foci at (
, 0) and (-
, 0)
Answer: A
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Assuming that the equations define x and y implicitly as differentiable functions 
find the slope of the curve 
at the given value of t.x(t + 1) - 4t
= 9, 2y + 4y3/2 = t3 + t, t = 0
A. 3
B. 
C. 
D. 6
Determine whether the statement is true or false.The graph of 
+ 
= 1 is an ellipse centered at (1, 2).
A. True B. False
Calculate the flux of the field F across the closed plane curve C.F = x2i + y2j; the curve C is the closed counterclockwise path around the triangle with vertices at (0, 0), (1, 0), and (0, 2)
A. 0
B. 6
C. - 
D. 2
Evaluate the line integral along the curve C.
ds , C is the curve r(t) = 4ti + (8 cos 
t)j + (8 sin 
t)k , 0 ? t ? 
?
A. 
+ 
B. 
?
C. 
?2 + 
D. 
?2 + 