For what values of x does the series converge conditionally?
A. x = -1
B. x = 1
C. x = ±1
D. None
Answer: A
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Solve the problem.A ball is thrown downward from a window in a tall building. Its position at time t in seconds is 
where s is in feet. How long (to the nearest tenth) will it take the ball to fall 168 feet?
A. 2.4 sec B. 5.8 sec C. 2.2 sec D. 3.2 sec
Provide an appropriate response.Suppose that A and B are both matrices of dimension r × s. Under what condition(s) can both the product AB and the product BA be found?
A. If r > 1 B. If r = s (Both matrices are square.) C. If r = 1 D. There are no conditions under which both products can be found.
Solve the system by the addition method.x2 + y2 - 4x + 8y + 19 = 0 x2 - y2 - 4x - 8y - 13 = 0
A. {(3, -4), (-1, -4)} B. {(3, -4), (1, -4)} C. {(2, 3), (2, 5)} D. {(2, -3), (2, -5)}
Write the set using interval notation.{x| 2 < x < 7}
A. (2, 7) B. [2, 7) C. (2, 7] D. [2, 7]