HP Prime - Solving 4 equations with 4 unknowns using RREF on a Matrix
ฝัง
- เผยแพร่เมื่อ 7 ก.ย. 2024
- Solving 2x2 and 3x3 equations is easily accomplished using the Linear Solver App on the HP Prime, but what about the more complicated systems of equations that you'll potentially run into in your engineering/physics classes?
This video shows how to use the RREF (Reduce Row Echelon Form) function with a matrix to solve these problems.
![ตีสิบเดย์ [FULL] | นางเอกหมอลำเงินล้าน "อุ๋งอิ๋ง เพชรบ้านแพง" & ไฮโซสาวสุดฮอต "ลิลลี่ เหงียน"](http://i.ytimg.com/vi/jPxQS_EgrJ4/mqdefault.jpg)
YOU CAN USE THE "," COMMA FOR MOVING TO THE NEXT ELEMENT WHEN TYPING A MATRIX
And for a bit bigger thna 3x3 I use the matrix editor (shift+1)
Perfect explanation on how to use the RREF on the prime
You can make a coefficient matrix with your unknowns, then a vertical matrix with the right side of the equations. Just multiply the inverse of the first matrix by the second and you get your answers. [A]^-1[B]. Saves some menu time on the TI anyway, haven't gotten my Prime in the mail yet.
This works on the Prime as well, but I think RREF gets you there with fewer keystrokes.
Appreciate you leaving a comment, Devin.
@@scottcollins7513 I'll have to try that since the menus are different. It'll be a learning curve for sure. Thanks.
@@commenter4799 actually, I might be wrong. Forgot to include navigation to get to RREF. Your way may be superior, after all. I am definitely NOT a Prime power user.
@@scottcollins7513 I like how you can make a matrix in the home screen and love how it natively supports complex numbers. Touch screen makes things much faster, too.
The HP Prime is a beast!
Thanks, Scott. I learned a lot from your videos during this covid pandemic lockdown in Malaysia
That's great to hear. Won't we all be glad when this Covid thing is behind us. Hang in there. Thanks for leaving a comment.
only if I knew that during engineering class... that is perfect to solve complex circuits
It is the sort of thing you would think the teacher/prof would actually point out -- if not RREF, at least the idea of using your calculator to solve 4x4 equations using Matrices.
@@scottcollins7513 yep, the problem is tha he only knew how to solve using the TI-68, and he insisted that no other calculator could do it, when I was looking into this I had no idea that rref would be able to solve it… now it’s too late I already graduated :)
Thank you! You just saved my day!
Nice... Thanks. You can speed up the matrix elements capture by using comma instead... Cheers
Good to know. Thanks for taking the time to let me know about this and to leave a comment. Take care.
You are an absolute legend. Thank you!
I appreciate the kind words!
once again something learned. thanks :)
GREAT to hear. Thanks for the comment, D@org3.
Thank you for this video 👍
Glad it helped. Happy calculating, Didier.
keen
great videos Scott
Tnx really needed this
Great to know it was helpful. Thanks for taking the time to say so.
If you push the coma, it's faster than the way you're doing it
Good tip. I am definitely not a Prime power user. Thanks for the comment.
Thanks so much, this really helped!
Great -- thanks for letting me know, Samuel.
why did HP change their perfect background contrasts from the times of old is a mystery - I battle to see the keys on the prime - long for my 28S - HPs new range of calcs do not even hold a candle to the old machines of the 80's
I think the Prime is a solid calculator - very happy with it. But, like you I have an affection for the HP 28S -- superb calculator. Thanks for the comments/encouraging words.
excellent! Thanks!
Always happy to hear it was helpful. Thanks for leaving a comment.
Could you also use the solve app to do this? Would it just be longer ?
I do not believe this would work, but perhaps there is some method by which it would work. Definitely, not something I am familiar with.
It WOULD fit the screen if you'd record a video as it should be - in landscape orientation.
Moreover the i age would be way bigger on my screen and not half the screen would be wasted with black areas.
Duh.
Dark theme, so edgy
Join us ... (Actually, it was the only way I could get my video to focus correctly -- but I did stick w it)
such an unintuitive machine! I used to badmouth the classpad but now I just miss it
I think in an effort to make the HP Prime "do it all", it is understandably complex (so was the HP48GX, though it had a more "cohesive" approach). Having two modes "Home" and "CAS" makes it even more confusing. The Prime is overkill for my needs these days -- the SwissMicros DM42 is my go to.
ХОТЕТ!
Thanks, Scott. I learned a lot from your videos during this covid pandemic lockdown in Malaysia