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ENGINEER DUDES and DUDETTES

G

Goosemaster

Lifer
For the longest time I have put off buying a ti89. My trusty ti83 plus has gotten me through every math as of yet, and now that i will be using electronics in caluclatiosn alter on (statics dynamics and all that stuff) I need to know

do I NEED a ti89, and if so what are the [practical] benefits of a ti89 over a ti83, and a ti89 platiinum over a regualr ti89?


Keep in mind that I am a wiz with integrations Diff. Eqs and such so i won't really need it for that...unless it is more of a "tedious problem" type of work around..ddiff eqs do let long, although my prof. makes us show all of the work.

thanks

 
i go through eng classes every day, and still use my trusty TI83 that i've had for 7 years now.

Sometimes i wish i had a ti89, but blah. I know how to use all the functions on my ti83

The 83 iss mainly a statistics calculator, and has a lot fo stats functions the other TI's don't have
 
I went up to diff-eq wiith my ti86, but in my diff-eq class we got to use the schools ti-92's. After a semester of using that I broke down and bought a ti89 (smaller version of ti92). I think I have gotten kinda lazy with regards to integration since I've had it but I like it a lot better than the 86. If you do get one check on ebayfor used ones. I got mine for 67$ shipped from ebay. It didn't come with the manual or cable but I never use those anyways. I don't know what the big difference is with the titanium but I doubt its worth the extra price.
 
Hmm..seems like most professors here don't let you use the 89 on tests...you could get a 92 to use in the room, and us ethe 83 on tests.
 
i used to use an 86, it was the least i'd reccomend. I dont remember the short commings of the 83 but
i do recall that polar and vector stuff was a lot easier on the 86 and 89. I have the platinum 89 now, its
just like the old 89. If you dont need the extra mem for programs then you'll likely find a good deal on a normal
89. The 89 is indespensible for checking symbolic stuff, doing partial fraction decomp and whenever i figure out EE
pro it may prove valuable in that regard. Of course its just a tool, but it is quite handy.
 
I stuck with my 89 until one of my EE professors required we to matrix inversions with complex numbers. I was way too lazy to do it by hand, and since they were allowed (I needed to be able to keep up with everyone else on time) I bought a ti-89.
 
Originally posted by: SuperTool
I have TI85. Enough for me. If I need more, I use matlab.
Click to expand...

Matlab > all

So far all my math classes have had no-calc tests, and I can use matlab to do everything I need on homework assignments (and I can print the graphs!).

The 83 is fine. I use it for all my math/science classes, but when it can't do what I need, I use matlab. Your school probably has licenses available somehow. Maye you can get it cheep in the bookstore. I don't know, but the program is amazing.
 
No need. Stick with what you know. My TI83 got me through 4 years of engineering school. And there is a problem someone mentioned above about mini-computers not allowed on tests.
 
89 is really convenient because of it's built in capabilities but the ti-83 silver can do just as much. The only difference is that the 83's display system is really inconvenient and i dont think you can copy/paste
 
I've been using a Ti-86 for about 3 or 4 years. Works great, but I recently bought a Ti-89 Titanium... and I can't figure it out. I need to read the manual, but ...
Needless to say, I use the 86 and the 89 is in my desk drawer 🙁
 
you really do not need it. Since I stopped using mine (it got stolen) I have been better at doing math. Use it, but do not depend on it. i only used it to check tough intergation and 3d plots.
 
In my senior year as an EE, I finally gave up my 86 for an HP 49g+. I would have done it long before if I had an 83, though, because of solving simultaneous equations.
 
I'd get one definately. I went from an 83 to an 89 and it was the best thing I ever did. It made college so much easier. 89 is much easier to manipulate matrices and display them. 89 will solve multiple equations at once. It will also do triple integrals and partial differentiation. Better games too. 🙂
 
Originally posted by: scorp00
I'd get one definately. I went from an 83 to an 89 and it was the best thing I ever did. It made college so much easier. 89 is much easier to manipulate matrices and display them. 89 will solve multiple equations at once. It will also do triple integrals and partial differentiation. Better games too. 🙂
Click to expand...

Triple Int.s are wasy


Originally posted by: bonkers325
u cant use graphing calculators on the Fundamental of Engineering exams, so why bother with anything better than an 83?
Click to expand...

Interesting...I guess I won't be getting one....I tutor math...everything including calc, so if I get lzy with derivation and integration, I will not be the only one to be fvked over if you get my drift....

The only time having an 83 caused hell was during my final exam in Linear algebra..EVERYONE and, once again, EVERYONE, had an 89 but me.....what's the problem you ask?

Everyone finished matrice operations really fast and finished the test in no time flat while I sat there crunching numbers in my head.....basically, the professor somehow gave enough time to use a calculator, and I got fvked over...I had finished like %75-80% of it when he called time...

talk about unfair....at least my other classes have been nicer.


Can anyone delve into the elctronics aspect of the caluclator, such as usage in calculating engineering "Stuff"..is it all diff. eq's and matrices, or is there somethign that the calc can do that I can't? I would creally like to know
 
The interface on the 89 is well worth getting it. The menu system is very easy to use. Also, since it can solve just about any problem, you can use it to check your answers on tests which is a big help.
 
Is TI the way to go now? Way back when I was getting my EE (8 years ago), HP was it. No ifs, ands, or buts. My HP 48SX is still kicking, although I'm definately not using it nearly as much as I did when I was in school.
 
Originally posted by: Goosemaster

The only time having an 83 caused hell was during my final exam in Linear algebra..EVERYONE and, once again, EVERYONE, had an 89 but me.....what's the problem you ask?

Everyone finished matrice operations really fast and finished the test in no time flat while I sat there crunching numbers in my head.....basically, the professor somehow gave enough time to use a calculator, and I got fvked over...I had finished like %75-80% of it when he called time...

talk about unfair....at least my other classes have been nicer.
Click to expand...

Yep, I had that happen in a few classes, which is why I got a better calculator.
 
<-- 2nd year engineering student, my TI-83 broke in high school after 5 years of use and i never bought another one.

I have a little-ass TI-30 Scientific Calculator. $10. If you're an engineer and you can't get by with this, switch majors 🙂
 
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