Big Ideas Math Integrated I, 2016
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Big Ideas Math Integrated I, 2016 View details
5. Geometric Sequences
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Exercise 23 Page 310

Start by finding the common ratio of the geometric sequence.

Next Three Terms: 1/8, 1/32, 1/128
Graph:

Practice makes perfect
Let's start by paying close attention to the terms of the given sequence. cccc a_1 & a_2 & a_3 & a_4 32 & 8 & 2 & 1/2 To write the next three terms, we first have to find the common ratio. To do so, we will calculate the quotient between any two consecutive terms. For simplicity, we will find the quotient between the second and the first terms.

a_2/a_1=8/32= 1/4 We have a geometric sequence with a common ratio of 14. To find the next three terms, we will multiply the value of the last term by 14 and repeat it twice. rrrrc a_5 & = & 1/2 ( 1/4) & = & 1/8 a_6 & = & 1/8 ( 1/4) & = & 1/32 a_7 & = & 1/32 ( 1/4) & = & 1/128 To graph the first seven terms, we will let the horizontal axis represent the position of the term within the sequence — this is the domain — and the vertical axis will represent the value of the terms — the range.