I had a job for a while where I had to calcuate the amount of metals to add to Grey/Ductile iron when castings were being made.
I just took the initiative to program all the info into my old Ti-83 and have all the results I needed in a few seconds, rather than manually calculating everything out and risking an error.
When my boss found out, he got the company to pay me to do a version in C++ so my replacement could use it, scraped castings went down about 20%. (probably .25 to .5% overall, but that's a lot of time/money saved.)
... and my math teacher said programming on my TI during class was never going to do anything for me. Skank.
I just took the initiative to program all the info into my old Ti-83 and have all the results I needed in a few seconds, rather than manually calculating everything out and risking an error.
When my boss found out, he got the company to pay me to do a version in C++ so my replacement could use it, scraped castings went down about 20%. (probably .25 to .5% overall, but that's a lot of time/money saved.)
... and my math teacher said programming on my TI during class was never going to do anything for me. Skank.
Yes. If you want to use RPN, the 50G is a far better calculator to own. If you want to use algebraic mode, the TI-89 is a better calculator to own. Both of them can do either, but algebraic is clunky on the 50G, and RPN is clunky on the 89.
Just by way of background, I had the TI-89 for perhaps a year and a half, used it for Calc 1 and 2, and diffeq, then switched to the 49G+ (read: 50G) in December of 2005. So I've had a huge amount of experience with both calcs. Feel free to PM any questions you have regardless of which calculator you choose.
I would say the 50G has a steeper learning curve, almost vertical compared to the 89. You'll have to spend a lot of time reading the docs, searching c.s.hp48, and playing with it to become comfortable using it. It's not one I'd recommend to the casual user who just wants it to do his homework for him. Once you get your mind wrapped around it, though, the power is incredible. I've programmed it or used programs from hpcalc.org for
- multiple statistics courses (mean/median/mode/percentiles/etc., run regressions & load sample datasets from SD card)
- calculus (multiple programs for all the applications, triple integrals, infinite series, derivatives, integration by parts, etc)
- diff eq (DESOLVE does the gruntwork, I wrote up a custom menu to be able to enter equations really fast)
- linear algebra (waaay ahead of the 89 here, just check out the amount of functions avail. in the MATRICIES menu)
- Introductory chem (periodic table, balance equations, molecular weight calculations, even made a flash card app so I could memorize the ions)
- Physics (equations with units, super powerful)
- Finance (TVM, cash flows, even cash flows with unknown quantities)
- Introductory elecronics (solves elementary circuits)
You could also use the 89 for almost all of these things (except SD card stuff), but it would be more disconnected when using it. You can reprogram keys and create custom menus on the 50G to repurpose it for the task at hand, but you can't do that as easily with the 89.
My suggestion would be to play with both and see what you prefer. HP doesn't mind the 50G rom being redistributed, so download Debug4x and give the emulator a whirl. For the 89, things are a bit trickier, since TI doesn't like their rom redistributed. You'll need to download TiEmu and feed it the TI-89 Titanium operating system from here
Oh, and here is a good comparison, if a bit dated. Hope I didn't scare you with all that info...
Originally posted by: yelo333
Yes. If you want to use RPN, the 50G is a far better calculator to own. If you want to use algebraic mode, the TI-89 is a better calculator to own. Both of them can do either, but algebraic is clunky on the 50G, and RPN is clunky on the 89.
Just by way of background, I had the TI-89 for perhaps a year and a half, used it for Calc 1 and 2, and diffeq, then switched to the 49G+ (read: 50G) in December of 2005. So I've had a huge amount of experience with both calcs. Feel free to PM any questions you have regardless of which calculator you choose.
I would say the 50G has a steeper learning curve, almost vertical compared to the 89. You'll have to spend a lot of time reading the docs, searching c.s.hp48, and playing with it to become comfortable using it. It's not one I'd recommend to the casual user who just wants it to do his homework for him. Once you get your mind wrapped around it, though, the power is incredible. I've programmed it or used programs from hpcalc.org for
- multiple statistics courses (mean/median/mode/percentiles/etc., run regressions & load sample datasets from SD card)
- calculus (multiple programs for all the applications, triple integrals, infinite series, derivatives, integration by parts, etc)
- diff eq (DESOLVE does the gruntwork, I wrote up a custom menu to be able to enter equations really fast)
- linear algebra (waaay ahead of the 89 here, just check out the amount of functions avail. in the MATRICIES menu)
- Introductory chem (periodic table, balance equations, molecular weight calculations, even made a flash card app so I could memorize the ions)
- Physics (equations with units, super powerful)
- Finance (TVM, cash flows, even cash flows with unknown quantities)
- Introductory elecronics (solves elementary circuits)
You could also use the 89 for almost all of these things (except SD card stuff), but it would be more disconnected when using it. You can reprogram keys and create custom menus on the 50G to repurpose it for the task at hand, but you can't do that as easily with the 89.
My suggestion would be to play with both and see what you prefer. HP doesn't mind the 50G rom being redistributed, so download Debug4x and give the emulator a whirl. For the 89, things are a bit trickier, since TI doesn't like their rom redistributed. You'll need to download TiEmu and feed it the TI-89 Titanium operating system from here
Oh, and here is a good comparison, if a bit dated. Hope I didn't scare you with all that info...
Excellent information!
Thank You
secretanchitman
Diamond Member
- Apr 11, 2001
- 9,353
- 23
- 91
used an 83 plus and that finally died after 6 years, so i upgraded to an 84 plus. i really did want a ti-89 titanium though...
Oh cool, those are finally for sale it looks like. I got to play with one last year, TI gave one to a teacher, and the math dept. told her to let me use it for a bit.
Gibson486
Lifer
- Aug 9, 2000
- 18,378
- 2
- 0
When you get into the work world, you will realize two things:
1. You just wanted a ti-89 or equivalent to help you "cheat" during school
2. Those graphing calcs serve no good purpose at most work places. They are are either too simplistic for your needs (you are gonna need matlab) or it is too complex for your needs (you just need a cheap $5 calc). Everything in between should be documented and worked out on paper.
1. You just wanted a ti-89 or equivalent to help you "cheat" during school
2. Those graphing calcs serve no good purpose at most work places. They are are either too simplistic for your needs (you are gonna need matlab) or it is too complex for your needs (you just need a cheap $5 calc). Everything in between should be documented and worked out on paper.
DrPizza
Administrator Elite Member Goat Whisperer
matlab? Bahhhh, Mathematica!! I just started using Mathematica with my high school calculus classes. I've also used it a ton with my freshman algebra classes. (They didn't use it.)
/thread
everyone in my office uses a scientific calculator with command line and memory capability. any formula you need will either be simple enough that a scientific calculator will solve it, or complex enough that you'd want to use a computer to solve it.
also, you need to document your work either on paper or on computer anyway so whats the point of a graphing calculator?
Gibson486
Lifer
- Aug 9, 2000
- 18,378
- 2
- 0
Can Mathmatica be used in industry to help extrapolate data to check levels of micronutrients in waste? Or can it be used by EEs to help define the frequencies at which the radio waves transmit most effecienty over a 1 mile radius with the addition of noise from multiple towers using mutliple frequencies? I ask because Engineers use matlab while math majors go gaga over mathmatica.
Zenmervolt
Elite member
- Oct 22, 2000
- 24,514
- 44
- 91
Those are definitely not better than the TI-89. My high school "mandated" (technically all they could do was strongly suggest since students still had to supply their own) those Casios. I bought an TI-85 instead. The TI-85 was always faster. It was even faster when graphing conic sections, despite the fact that the TI-85 required standard form while the Casio did not. The Casios were junk. Even the color screen gimmick wasn't worth anything since the colors were always washed out and difficult to tell apart.
ZV
DrPizza
Administrator Elite Member Goat Whisperer
I think the reason they're still so expensive is they're working hard on keeping the market cornered - not necessarily because of the quality of their product (see other recommendations in the thread), but because they're so actively involved, all the way to state departments of education. I spend a fair deal of time on the listserv for teachers in my state - TI is *very* active on the listserv, applying TI calculators to the solution of just about any problem they can. Unlike the video forum here, they've provided a pretty good balance of being informative, rather than being shills. But essentially, they work so hard with bunches of state representatives constantly offering workshops (which teachers get several hours worth of credit for professional development - something they need to do in NY), and what appears to have been some massive lobbying with the state.
End result: graphing calculators are *required* to be provided to EVERY high school student in NY, and guess which company is recommended? That's right - by order of the commissioner of education in NY, students can NOT be required to purchase their own graphing calculators. And, graphing calculators are *required* for each of the first 3 years of math instruction at the secondary level (algebra, geometry, algebraII/trig)
I can't think of any other tech product that manages to maintain its price over more than a decade. Not a monopoly, but they've got the market cornered & it seems get to dictate price.
Toastedlightly
Diamond Member
- Aug 7, 2004
- 7,214
- 6
- 81
If the course is open book, what is the point? I'm just commenting from my experience in my engineering department, which I think is an awesome department.
HP was the king for engineering students back in the 48GX heyday (when the mofos cost upwards of $300), but TI has bitch slapped them pretty hard since then. My recollection is that they got a number of models of graphing calculators on the shelves at Walmart in the early/mid 90's at a price point below $100 (they were the only "high end" calculators there other than a Casio or two), while HP had more or less zero presence at discount stores -- which all apparently lead to high schools nationwide recommending/requiring TI calculators and developing millions of TI fanboys 4 lyfe.
RPN is still better.
RPN is still better.
I used a 32SII through college and my job. It's served me well. Not a graphing calculator, but a pretty powerful scientific. I don't do much heavy math though anymore that involves a calculator.
Nope. I was actually taking junior high courses while in elementary school. It's been that way for me ever since. One step above the rest.
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