Verify the identity.(1 - cos x)(1 + cos x) = sin2x
What will be an ideal response?
(1 - cos x)(1 + cos x) = 1 - cos2x = sin2x
Mathematics
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Provide an appropriate response.If f(x0, y0) = -2 and the limit of f(x, y) exists as (x, y) approaches (x0, y0), what can you say about the continuity of 
at the point 
Give reasons for your answer.
What will be an ideal response?
Mathematics
Find the vertices and foci of the ellipse.
+ 
= 1
A. Vertices: (±20, 0); Foci: ( ±16, 0) B. Vertices: (0, ±20); Foci: (0, ±16) C. Vertices: (0, ±20); Foci: (0, ±12) D. Vertices: (±16, 0); Foci: ( ±12, 0)
Mathematics
Solve the equation by factoring.4x2 + 16x + 15 = 0
A. 
B. 
C. 
D. 
Mathematics
Find the slope and the y-intercept of the line.2x + 2y + 5 = 0
A. m = -1, y-intercept: 
B. m = 1, y-intercept: 
C. m = 1, y-intercept: (0, 5)
D. m = -1, y-intercept: (0, -5)
Mathematics