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

  • Calculators
  • Thread starter Kawaisou
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Main Question or Discussion Point

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!^^
 

Answers and Replies

Mech_Engineer
Science Advisor
Gold Member
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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.
 
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For the TI-89, you use 2nd Catalog, which has the i written above it.
 
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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" [Broken]

I hope this helps!
 
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