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  1. AP Calculus
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Infinite Sequences and Series (BC Only)

Question 1
college-boardCalculus AB/BCAPExam Style
1 mark

What is the sum of a geometric series with first term 6 and common ratio 12\frac{1}{2}21​?

Question 2
college-boardCalculus AB/BCAPExam Style
1 mark

Suppose you start with a geometric series with a common ratio RRR and sum SSS. If RRR increases to R+KR+KR+K (K>0K>0K>0) and SSS changes to S′S'S′, what is the relation between SSS and S′S'S′?

Question 3
college-boardCalculus AB/BCAPExam Style
1 mark

Which condition must be met for the series sum from n=1n=1n=1 to infinity of (−1)n+1n+5\frac{(-1)^{n+1}}{\sqrt{n+5}}n+5​(−1)n+1​ to converge absolutely?

Question 4
college-boardCalculus AB/BCAPExam Style
1 mark

What must be true about a function f(x)f(x)f(x) that converges to form an infinite geometric series when integrated over an interval [c,d][c,d][c,d]?

Question 5
college-boardCalculus AB/BCAPExam Style
1 mark

What is the sum of an infinite geometric series with a first term a = 7 and a common ratio r = -1/2?

Question 6
college-boardCalculus AB/BCAPExam Style
1 mark

If a geometric sequence has an eighth term equal to 128243\frac{128}{243}243128​ and a common ratio less than one, what is its fifth term?

Question 7
college-boardCalculus AB/BCAPExam Style
1 mark

What is true about a geometric series if we double both its first term and common ratio?

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Question 8
college-boardCalculus AB/BCAPExam Style
1 mark

What is the common ratio of the geometric series 3+6+12+24+⋯3 + 6 + 12 + 24 + \cdots3+6+12+24+⋯?

Question 9
college-boardCalculus AB/BCAPExam Style
1 mark

If the first term (a1a_1a1​) is 10 and the common ratio (rrr) is 12\frac{1}{2}21​, what is the sixth term (a6a_6a6​)?

Question 10
college-boardCalculus AB/BCAPExam Style
1 mark

If the fourth partial sum of a geometric series is 252525 and the common ratio is 12\frac{1}{2}21​, what is the sum of the infinite geometric series?