Find an equation for the graph.
A. y = 2 sin 
B. y = 4 sin 
C. y = 4 sin (2x)
D. y = 2 sin (4x)
Answer: B
Mathematics
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Use the given vectors u, v, w, and z to draw the indicated vector. 
v - w
A. 
B. 
C. 
D. 
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Convert the equation given in rectangular form into polar form.(x - 11)2 + y2 = 121
A. r2 = 22 cos ? B. r = 22 sin ? C. r = -22 sin ? + 121 D. r = 22 cos ?
Mathematics
Write the expression in the standard form a + bi.
A. 1 B. -1 C. -i D. i
Mathematics
Write the equation of the ellipse that has its center at the origin, focus at 
, and major axis equal to 18.
?
A. 
B. 
C. 
D. 
E. 
Mathematics