Find the vertex and focus of the parabola from the given equation and select its graph.
?
?
A. Vertex: (0,0)
Focus: (-
,0)
B. Vertex: (-
,0)Focus: (0,0)
C. Vertex: (0,0)
Focus: (0,
)
D. Vertex: (0,0)
Focus: (0,-
)
E. Vertex: (0,0)
Focus: (
,0)
Answer: A
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A. Valid B. Invalid
Find the approximate change in z when the point 
changes from 
to 
.
?
; from 
to 
?
A. ?
B. 
C. ?
D. ?
E. ?
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Use trigonometric identities to solve each equation in the interval [0, 2?]3 = 2 cos2 x + 3 sin x
A. 
, 
, 
B. 
, 
, 
C. 
, 
, 
D. 
, ?, 