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How to Disable CAS Completely on HP Prime?
05-20-2019, 11:06 AM
Post: #1
How to Disable CAS Completely on HP Prime?
I'm taking linear algebra and my instructor will not allow CAS enabled calculators. I told him about exam mode but is not willing to accept. Therefore, I am left with two options: 'enable' exam mode forever (probably custom firmware?), Or shell out a bunch of money and get ripped off buying a ti 84.

So, do any of you guys know of a way to completely disable CAS? Is it possible to flash a custom firmware where there is no timeout for exam mode?

Thanks in advance for any help.
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05-20-2019, 12:31 PM
Post: #2
RE: How to Disable CAS Completely on HP Prime?
There is the examination mode, what's cooler than that ? Wink
Teachers can easily disable the CAS or any specific apps, including creating custom configurations.
The system is password protected.
Best,

Aries Smile
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05-20-2019, 12:53 PM
Post: #3
RE: How to Disable CAS Completely on HP Prime?
(05-20-2019 12:31 PM)Aries Wrote:  There is the examination mode, what's cooler than that ? Wink
Teachers can easily disable the CAS or any specific apps, including creating custom configurations.
The system is password protected.
Best,

Aries Smile

Yeah I know, it's pretty great! However, my instructor isn't convinced. He thinks it will be too hard to monitor and time consuming to check every time ..

For now what I'm gonna do is put it in exam mode as soon as I enter the class. If he asks if it can do CAS, then I'll just tell him it's a custom firmware where it's permanently disabled. He said he doesn't know much about calculators beyond the ti series, so hopefully he'll but it Smile.
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05-20-2019, 01:22 PM (This post was last modified: 05-20-2019 01:29 PM by Dave Britten.)
Post: #4
RE: How to Disable CAS Completely on HP Prime?
If you have to bite the bullet and buy an alternative calculator for this class, head over to ebay and buy a cheap Casio fx-9860G (any version; the Slim is very nice, but the OS 2.0 upgrade for that model isn't as readily available). The Casio will do matrix dimensions up to 999 vs. only 99 on the TI-84, and it can also do vectors (fx-9860GII only) and complex matrices. You shouldn't have to spend more than $40.

Alternatively, an old TI-85 for ~$20 will give you pretty good matrix and vector functionality.
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05-20-2019, 01:32 PM
Post: #5
RE: How to Disable CAS Completely on HP Prime?
Short answer, no.

If they won't let you do the exam mode for an exam, SOL. Professor wants to keep teaching the same way they have taught for 20 years...

TW

Although I work for the HP calculator group, the views and opinions I post here are my own.
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05-20-2019, 01:52 PM
Post: #6
RE: How to Disable CAS Completely on HP Prime?
Had to check urban dictionary for SOL translation.
Wow!! Really?
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05-20-2019, 03:45 PM (This post was last modified: 05-20-2019 03:50 PM by StephenG1CMZ.)
Post: #7
RE: How to Disable CAS Completely on HP Prime?
Flashing the firmware to disable the CAS is not the answer you are seeking...
That would be less controlled than the exam mode.
Think about what the Prof would do if he looks at the documentation one day (perhaps the day before the exam) and reads that it can do CAS! Zero marks for any coursework, and no calculator for the exam - or one that you are then unfamiliar with.
Do not break the rules unless you will be happy with the consequences.

Stephen Lewkowicz (G1CMZ)
My Astronomy: Lunar program celebrates Apollo 11 landing on the Moon 50 years ago.
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05-20-2019, 05:10 PM
Post: #8
RE: How to Disable CAS Completely on HP Prime?
(05-20-2019 11:06 AM)Serpenteagle Wrote:  ... my instructor will not allow CAS enabled calculators. I told him about exam mode but is not willing to accept...

So instead of your teacher being proud of one of his students using the best calculator on the planet, he will rather forbid you to use that calculator? Even if that calculator can adapt to his requirements? Shame on you, professor!

[When I studied math at university, I got the best possible grade and to this day I think one of the main reasons was to own and use the TI-58C (it was the mid-1980s and I was only one in class with such capable calculator). Because who else would buy such calculator other than the one who enjoy math?]

Geocaching Coords Solver, Number of triangles Puzzle
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05-22-2019, 08:10 PM
Post: #9
RE: How to Disable CAS Completely on HP Prime?
Sorry for the late reply, sorta forgot about it!

I went ahead and purchased a CASIO PRIZM fx-CG10 on ebay for a super low price. Decided that trying to fool the instructor by taping off the CAS button on the prime was a bad idea haha.

Anyways, thanks for all the suggestions!
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05-22-2019, 08:35 PM
Post: #10
RE: How to Disable CAS Completely on HP Prime?
(05-22-2019 08:10 PM)Serpenteagle Wrote:  Sorry for the late reply, sorta forgot about it!

I went ahead and purchased a CASIO PRIZM fx-CG10 on ebay for a super low price. Decided that trying to fool the instructor by taping off the CAS button on the prime was a bad idea haha.

Anyways, thanks for all the suggestions!

An excellent choice. The Prizm is a very worthy competitor to the TI-84, and surpasses it in many ways. You can grab the latest OS update here:

http://edu.casio.com/download/index.php
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05-22-2019, 09:23 PM
Post: #11
RE: How to Disable CAS Completely on HP Prime?
(05-22-2019 08:35 PM)Dave Britten Wrote:  
(05-22-2019 08:10 PM)Serpenteagle Wrote:  Sorry for the late reply, sorta forgot about it!

I went ahead and purchased a CASIO PRIZM fx-CG10 on ebay for a super low price. Decided that trying to fool the instructor by taping off the CAS button on the prime was a bad idea haha.

Anyways, thanks for all the suggestions!

An excellent choice. The Prizm is a very worthy competitor to the TI-84, and surpasses it in many ways. You can grab the latest OS update here:

http://edu.casio.com/download/index.php

You can also put KhiCAS on it to be super sneaky. Smile

— Ian Abbott
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05-23-2019, 06:51 PM
Post: #12
RE: How to Disable CAS Completely on HP Prime?
(05-22-2019 08:35 PM)Dave Britten Wrote:  
(05-22-2019 08:10 PM)Serpenteagle Wrote:  Sorry for the late reply, sorta forgot about it!

I went ahead and purchased a CASIO PRIZM fx-CG10 on ebay for a super low price. Decided that trying to fool the instructor by taping off the CAS button on the prime was a bad idea haha.

Anyways, thanks for all the suggestions!

An excellent choice. The Prizm is a very worthy competitor to the TI-84, and surpasses it in many ways. You can grab the latest OS update here:

http://edu.casio.com/download/index.php

Thank you!

(05-22-2019 09:23 PM)ijabbott Wrote:  
(05-22-2019 08:35 PM)Dave Britten Wrote:  An excellent choice. The Prizm is a very worthy competitor to the TI-84, and surpasses it in many ways. You can grab the latest OS update here:

http://edu.casio.com/download/index.php

You can also put KhiCAS on it to be super sneaky. Smile

Which is so stupid because you can put CAS on virtually any modern calculator. My instructor said it would take too long to check everyone's calculator, which means he acknowledges that he doesn't really know whether or not a student is using an illegal calculator.

But here I am being honest and upfront with him, yet he totally denies me. People in power make stupid rules. This is one of the reasons why I hate school. Self study FTW!
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