Find the principle unit normal vector to the curve given below at the specified point.
?
, 
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: D
Mathematics
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Use the Comparison Test to determine if the series converges or diverges.
A. diverges B. converges
Mathematics
Use algebraic and/or graphical methods to solve the inequality.(x + 7)(x + 6)(x - 5) < 0
A. x < -7 or -6 < x < 5 B. x > 5 C. -7 < x < -6 or x > 5 D. x < -6
Mathematics
Solve the equation symbolically.
(6x - 10) = 
(15x - 9)
A. -1
B. -15
C. 
D. 1
Mathematics
Find an equation of a parabola satisfying the given conditions.Focus at (-6, 6), directrix x = -4
A. (x - 6)2 = -4(y + 5) B. (y + 6)2 = -4(x + 5) C. (y - 6)2 = -4(x + 5) D. (x + 6)2 = -4(y + 5)
Mathematics