Complex Numbers on the TI-89 Titanium Claculator, help?

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Discussion Overview

The discussion revolves around the use of the TI-89 Titanium calculator for performing operations with complex numbers, specifically in the context of Algebra 2. Participants share their experiences and advice on how to handle complex number calculations both manually and with the calculator.

Discussion Character

  • Homework-related, Technical explanation

Main Points Raised

  • One participant expresses confusion about performing operations with complex numbers and seeks help with specific examples.
  • Another participant advises learning to perform the calculations by hand before relying on the calculator, suggesting that this approach is more beneficial for understanding.
  • A different participant provides a specific method for using the TI-89 to perform complex number operations, mentioning the use of the 2nd Catalog feature.
  • One participant shares a link to a blog post that explains how to manipulate complex numbers, indicating it may provide the needed guidance.

Areas of Agreement / Disagreement

There is no consensus on whether using the calculator is beneficial for learning, as some participants advocate for manual calculations while others provide technical assistance for the calculator.

Contextual Notes

The discussion does not resolve the effectiveness of using calculators versus manual calculations, and participants have not reached an agreement on the best approach to learning complex numbers.

Kawaisou
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Hello all,

My first post here and sorry it is not very scholarly. lol

I am currently taking Algebra 2 and am completely lost as how to find the answers to simple equations and expressions such as the ones below. Can anybody help me out or if you own a TI-89 Calc and know how to perform these operations, please let me know! I will need to do it by hand but if I can do it on the Calc I can learn better with having the answer before hand and such. Well anyway, here are the examples.

1. (4 - i) + (3 + 2i) change to standard form

2. 5i(-2 + i)

Thanks everybody!^^
 
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Learn how to do it by hand FIRST. Doing it on the calculator will not help in your learning process, despite what you would like to believe.
 
For the TI-89, you use 2nd Catalog, which has the i written above it.
 
I wrote a little blog post that explains exactly what you are looking for.

http://blog.ncday.net/2010/07/how-to-manipulate-complex-numbers.html"

I hope this helps!
 
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