How to tell the difference in series

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  • Thread starter Thread starter Kendall Pecere
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Discussion Overview

The discussion revolves around identifying different types of series in calculus, specifically arithmetic, geometric, p-series, and harmonic series. Participants share their experiences and seek guidance on how to effectively recognize these series types in preparation for quizzes and tests.

Discussion Character

  • Homework-related, Conceptual clarification

Main Points Raised

  • One participant expresses difficulty in identifying series types and seeks effective methods for recognition before tests.
  • Another participant suggests that understanding the definitions of each series type is crucial and questions whether the participant's series meets those definitions.
  • A different participant notes that early questions may focus more on convergence and divergence rather than on computing sums of series, indicating a potential shift in focus for assessments.
  • This participant also mentions that knowledge of geometric and telescopic series, as well as Cauchy products and double series, may be relevant for the first test.

Areas of Agreement / Disagreement

There is no clear consensus on the best method for identifying series types, and multiple viewpoints regarding the focus of upcoming assessments are presented.

Contextual Notes

Participants reference various definitions and types of series, but there is no agreement on a singular approach to identification. The discussion also highlights the potential for different types of questions on tests, which may not align with the initial query about series identification.

Kendall Pecere
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Hey all! I am in Calculus 2, and we are starting to get into series. This may seem like an odd question, but on quizzes I seem to have difficulty identifying the type of series in order to be able to properly work it, and I'd like to have this down before I get to the test. Does anybody have a good way of identify whether a series is arithmetic? Geometric? P-series? Harmonic? Professor hasn't really given any suggestions other than to just kind of eyeball it, and that only works to a certain degree. Thanks in advance for any replies!
 
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Moved from HW section as this is not specifically a homework question. @Kendall Pecere, if you post a question in the homework section, you must use the homework template.
 
Kendall Pecere said:
Hey all! I am in Calculus 2, and we are starting to get into series. This may seem like an odd question, but on quizzes I seem to have difficulty identifying the type of series in order to be able to properly work it, and I'd like to have this down before I get to the test. Does anybody have a good way of identify whether a series is arithmetic? Geometric? P-series? Harmonic? Professor hasn't really given any suggestions other than to just kind of eyeball it, and that only works to a certain degree. Thanks in advance for any replies!

What is the definition of an arithmetic series? Does your given series (if you have one) satisfy that definition? Same questions for "geometric" or "p-series". I am not sure what definition your instructor uses for "harmonic series", but as far as I know there really is only one such series, up to a multiplicative constant, maybe.
 
If you are starting on series, I think it is more likely you get questions regarding convergence-divergence rather than computing the sum of converging series which often require knowledge on power series and Fourier series. Maybe you can be asked to evaluate the sum of geometric and telescopic series, as well as Cauchy products, and double series in easy cases.

I'd say that for a first test, you need to be solid on convergence.
 

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