Rewrite the series using summation notation. Use 1 as the lower limit of summation.2(12) + 2(22) + . . . + 2(62)
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (1, -1) for -7xy2 + 2x2y + 7x = 0.
A. - 
B. 
C. 
D. - 
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Find the area enclosed by the given curves.y = 
x2, y = -x2 + 6
A. 32 B. 8 C. 16 D. 4
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Use the substitution method to solve the system.4x - 6y = -102x + 2y = 30
A. (7, 8) B. (8, 8) C. (8, 7) D. No solution
Mathematics
Write a polar equation of a hyperbola with eccentricity 3 and directrix r = 2csc?.
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Mathematics