Find a formula for the nth term of the sequence.1, - 
, 
, - 
, 
(reciprocals of squares with alternating signs)
A. an = 
B. an = 
C. an = 
D. an = 
Answer: A
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Graph the equation using a graphing utility. Use a graphing utility to approximate the intercepts rounded to two decimal places, if necessary. Use the TABLE feature to help establish the viewing window.y = 3x2 - 19
A. (0, -19), (2.52, 0) B. (0, 19), (-2.52, 0), (2.52, 0) C. (0, -19), (-2.52, 0), (2.52, 0) D. (0, -19), (-2.51, 0), (2.51, 0)
Express the limit as a definite integral where P is a partition of the given interval.lim
?0
?xk, [-6?, 6?]
A. 
dx
B. 
dx
C. 
dx
D. 
dx
Sketch the logarithmic function. Determine the domain, range, and the equation of any vertical asymptotes.f(x) = log3(x + 1) + 3
A. Domain: (- 1, ?), range: (-?, ?)
Vertical asymptote: x = - 1
B. Domain: (1, ?), range: (-?, ?)
Vertical asymptote: x = 1
C. Domain: (1, ?), range: (-?, ?)
Vertical asymptote: x = 1
D. Domain: (- 1, ?), range: (-?, ?)
Vertical asymptote: x = - 1
Find all real-number solutions. Round your answer to the second decimal place, if necessary. 
= 
A. 5.42 B. ±5.42 C. 2.53 D. ±2.53