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Subsections
The purpose of this lab is to learn how to define sequences and series using Maple as well as observe their plots and test for convergence.
To assist you, there is a worksheet associated with this lab that
contains examples similar to some of the exercises.On your Maple screen go to File  Open then type the following in the white rectangle:
\\storage\academics\math\calclab\MA1023\Series_start_B16.mw
You can copy the worksheet now, but you should read through the lab
before you load it into Maple. Once you have read through the exercises, start up Maple, load the worksheet, and go through it carefully. Then you can start working on the exercises.
An infinite series is the sum of an infinite sequence. More precisely, the sum of an infinite series is defined as the limit of the sequence of the partial sums of the terms of the series, provided this limit exists. If no finite limit exists, then we say that the series is divergent.
The sum of an infinite series is defined as
, where is the partial sum of the first n terms of the series. However, because of the algebraic difficulty of expressing as a function of n, it is usually not possible to find sums by directly using the definition.
So, if we can generally not work from the definition, what can be done? There are several convergence tests that provide us with some needed tools. These are tests that tell us if a series converges, but in the case that the series does converge, does not tell us the sum of the series.
The convergence tests that will be used in this lab are the integral test and the ratio test.
The Integral Test for convergence is a method used to test convergence of an infinite series of nonnegative terms.
The series
converges if and only if the integral
is finite, where is a positive, nonincreasing and continuous function defined on the interval and an for all .
The Ratio Test for convergence of a series can be thought of as a measurement of how fast the series is increasing or decreasing. This can be found by looking at the ratio
as
.
Given the series
, suppose that
Then
 the series converges if ,
 the series diverges if ,
 the test is inconclusive if .
Given the series
, suppose that
exists, then the series:
 Converges absolutely if
 Diverges of
The radius of convergence of a series can usually be found by using the ratio test:
Next, you would need to solve for the interval of values such that .
 Use any convergence test to determine if each of the following series converges or diverges and explain your answer.







Next: About this document ...
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Dina J. SolitroRassias
20161117