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Calculate, to four decimal places, the first ten …

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Problem 19 Medium Difficulty

Calculate, to four decimal places, the first ten terms of the sequence and use them to plot the graph of the sequence by hand. Does the sequence appear to have a limit? If so, calculate it. If not, explain why.
$ a_n = \frac {3n}{1 + 6n} $


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Related Courses

Calculus 2 / BC

Calculus: Early Transcendentals

Chapter 11

Infinite Sequences and Series

Section 1

Sequences

Related Topics

Sequences

Series

Discussion

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Lectures

Video Thumbnail

01:59

Series - Intro

In mathematics, a series is, informally speaking, the sum of the terms of an infinite sequence. The sum of a finite sequence of real numbers is called a finite series. The sum of an infinite sequence of real numbers may or may not have a well-defined sum, and may or may not be equal to the limit of the sequence, if it exists. The study of the sums of infinite sequences is a major area in mathematics known as analysis.

Video Thumbnail

02:28

Sequences - Intro

In mathematics, a sequence is an enumerated collection of objects in which repetitions are allowed. Like a set, it contains members (also called elements, or terms). The number of elements (possibly infinite) is called the length of the sequence. Unlike a set, order matters, and exactly the same elements can appear multiple times at different positions in the sequence. Formally, a sequence can be defined as a function whose domain is either the set of the natural numbers (for infinite sequences) or the set of the first "n" natural numbers (for a finite sequence). A sequence can be thought of as a list of elements with a particular order. Sequences are useful in a number of mathematical disciplines for studying functions, spaces, and other mathematical structures using the convergence properties of sequences. In particular, sequences are the basis for series, which are important in differential equations and analysis. Sequences are also of interest in their own right and can be studied as patterns or puzzles, such as in the study of prime numbers.

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Watch More Solved Questions in Chapter 11

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Problem 5
Problem 6
Problem 7
Problem 8
Problem 9
Problem 10
Problem 11
Problem 12
Problem 13
Problem 14
Problem 15
Problem 16
Problem 17
Problem 18
Problem 19
Problem 20
Problem 21
Problem 22
Problem 23
Problem 24
Problem 25
Problem 26
Problem 27
Problem 28
Problem 29
Problem 30
Problem 31
Problem 32
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Problem 35
Problem 36
Problem 37
Problem 38
Problem 39
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Problem 46
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Problem 48
Problem 49
Problem 50
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Problem 54
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Problem 90
Problem 91
Problem 92
Problem 93

Video Transcript

for in equals one plug in one. Here we get three over seven, which is approximately zero point for two eight six okay and equals two. We plug in the value we get six over thirteen. Um, six over thirteen is approximately zero point for six one five. Ah, let me just list out all of the values here. So the first ten terms that were going to get zero point for two eight six, that's the first one That's for n equals one. Then we have zero point for six one five. Then we have zero point for seven, three seven and then we'LL have zero point for a hello then we'll have zero point for eight three nine Then we'LL have zero point for eight, six five Okay? And there's going to be, you know, somewhere terms that we would want to include there as well if we I really did all ten of them I'll start drawing this graph So there's one two, three for five six love in along this axis And then the eyes of an over here. So zero point one your point two point three their point for zero point five Okay, so we know the first term is zero point four two eight six. That's when in his one. So that's going to be around here. Next term, zero point four six one five. That's for n equals two sit n equals two for six. So about halfway between point for one point five for in equals three zero point four seven three seven. So that's going to be pretty close to where the other one wass Okay, And then the fourth one point for eight. So that's still going to be pretty close to the other one. Okay. And then you can see the pattern here terms if we just connect the dots. Looks like we're getting pretty close. Looks like we're flattening out here. It looks like we're just getting closer and closer to zero point five. So it looks Yeah, it looks like we converge because it looks like we've converged because it looks like we're flattening out. So if this does flat now and we do happen to have a horizontal ass in tow at zero point five, then that would mean that we converged to zero point five. So we do appear to have a limit because we do appear to have a horizontal asked meto. So to figure out the limit, we would need to. It's right. Lim is an approaches infinity of three in over one plus six and and then this limit shouldn't be too bad to figure out. We can just divide the top on the bottom by and as in goes to infinity one over and goes to zero. So this is this goes to three over six, which is one half, so that is indeed the limit.

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Sequences

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Video Thumbnail

01:59

Series - Intro

In mathematics, a series is, informally speaking, the sum of the terms of an infinite sequence. The sum of a finite sequence of real numbers is called a finite series. The sum of an infinite sequence of real numbers may or may not have a well-defined sum, and may or may not be equal to the limit of the sequence, if it exists. The study of the sums of infinite sequences is a major area in mathematics known as analysis.

Video Thumbnail

02:28

Sequences - Intro

In mathematics, a sequence is an enumerated collection of objects in which repetitions are allowed. Like a set, it contains members (also called elements, or terms). The number of elements (possibly infinite) is called the length of the sequence. Unlike a set, order matters, and exactly the same elements can appear multiple times at different positions in the sequence. Formally, a sequence can be defined as a function whose domain is either the set of the natural numbers (for infinite sequences) or the set of the first "n" natural numbers (for a finite sequence). A sequence can be thought of as a list of elements with a particular order. Sequences are useful in a number of mathematical disciplines for studying functions, spaces, and other mathematical structures using the convergence properties of sequences. In particular, sequences are the basis for series, which are important in differential equations and analysis. Sequences are also of interest in their own right and can be studied as patterns or puzzles, such as in the study of prime numbers.

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