HP 48GX and HP Prime - Solve an equation for x using solver tool 

You make a superb point here. I just tried CAS "solve(3*x-1=1.03^x)" on the HP Prime and got two valid answers. 0.67336... and 219.51151... On the HP 48GX, using the solver, I had to put in 157 before it would find the 219.51151... answer. Any lower and it would find 0.67336... I did not try using CAS on it. Even when I used 219.5115 as a starting point on my DM42, it finds 0.67336. Not as "smart" as the HP 48GX, it seems. But super accurate w/ the solution it does find. Thanks for the useful and interesting comment, Arjunaidi.

Good catch. You are the second person to catch my oversight. Helpful info for me and for anyone who watches the video. Thanks for taking the time to point this out. Take care.

It is called "reMarkable" tablet.

@@scottcollins7513 Thanks!

GREAT point. Yes, indeed there are two solutions as I probably should have realized. Does the TI-89 automatically find both solutions, or did you enter two different starting values? I'm guessing that because it is has a CAS (computer algebra system), it actually "solves" the problem, finding both solutions, rather than iterating the solution as I'm doing in the video. Thanks for the feedback.

@@scottcollins7513 Yes, the 89 found both solutions automatically. Actually, it also warned that more solutions may exist.

@@perfectman3077 That is impressive.

@@perfectman3077 Sorry to ask, how? the nsolve() just give you one answer.

@@franz2383 I used just "solve()"

www.hpcalc.org/hp48/docs/faq/48faq-5.html This says NO, but you can create a small program to make it easier.

@@scottcollins7513 isn't odd that this operation was not programmed into the 48 gx.

Sebastian, it took me a while to get out my old manual. The command can be found under MTH > MATR > FACTR > RREF

I have since improved somewhat on my approach shown in this video, but it will serve as a starting point for you to learn how you might use the CST menu: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pvofVRnH1ws.html

Hi, Leandro. Thanks for the feedback. When you say "get the roots" do you mean like the "cube root of 27" and the "square root of 5"? As far as "shortcuts", do you mean how to create your own shortcuts that appear in the custom menu? If so, I definitely could do that -- what type of shortcut are you thinking of?

Or do you mean "find the roots (zeros) of a polynomial" equation?

Scott Collins roots of a polynomial. I know it’s really basic but I cant understand this calculator haha

@@leandrosueldo9247 The calculator is rewarding, but definitely takes some time to figure out how to use it. To find roots of the polynomial "x^3 + 2x^2 - 29x + 42": Enter coeff onto stack: [1 2 -29 42] Enter "Poly Roots" command: PROOT You should get the answer: [2 3 -7] These are the 3 roots

I rewatched the video and understand the "shortcut" you are talking about. I will do a video on this at some point.

I guess I wanted to show something that I had found helpful, but I can see why it would be frustrating in your situation where you are just trying to use it without any modifications. Were you able to get the solver working yet? If not, I could see if I can find info to help or possibly even make my own short video. Let me know.

@@scottcollins7513 Thank you for replying. My feedback is that many people watch your videos to learn, so keeping the standard settings is important for them to replicate the steps and understand how it works. Thanks.

@@JohnUsp Good point, John. I may make a video showing this if I cannot easily find one already made on youtube. Take care.