A parabola has its vertex at the origin, and the equation of its directrix is y = -10 . Find the coordinates of the focus.
A) (0,-10)
B) (-10,0)
C) (0,10)
D) (10,0)
C) (0,10)
Mathematics
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Evaluate the improper integral.
A. 15 B. 0 C. 5 D. 3
Mathematics
Find the indicated derivative.Find y ''' if y = 2x sin x.
A. y ''' = - 2x cos x + 6 sin x B. y ''' = 4 cos x - 2x sin x C. y ''' = - 2x cos x - 6 sin x D. y ''' = 2x cos x + 6 sin x
Mathematics
Graph the line described.Through (6, 0); m = - 
A. 
B. 
C. 
D. 
Mathematics
Solve the system by elimination. x - 5y = 4 7x - 4y = 28
A. ? B. {(-4, -1)} C. {(4, 0)} D. {(5, 4)}
Mathematics