Solve App problem - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: HP Prime (/forum-5.html) +--- Thread: Solve App problem (/thread-6046.html) Solve App problem - kruki - 04-15-2016 06:48 PM Hi I bought HP Prime app for android and tried to solve some simple equation via built in Solve app but "Cannot find solution" error appeared. Here are the steps I tried: 1. http://i.imgur.com/84wtJKw.png 2. http://i.imgur.com/nEA2T4l.png or 1. http://i.imgur.com/vHf70j0.png 2. http://i.imgur.com/jkHRnN5.png and the result is always http://i.imgur.com/UEXCppy.png http://i.imgur.com/mWsba0c.png On my old HP49g I often used "solvesys 49 (solvesys.lib)" program(simultaneous nonlinear equation solver) for similar more complicated equations and was very satisfied. Is there a possibility to make it work with HP Prime? Sorry for mistakes but English is not my native language. Thanks in andvance. RE: Solve App problem - informach - 04-15-2016 07:24 PM Hi!: You must select, as many variables, as there are, equations. See, the images. Kind Regards. informach. RE: Solve App problem - kruki - 04-16-2016 12:09 AM Thank you informach for quick replay but I just discover some weird results. I checked "V" and "P" as variables and changed the values of "N" from 1 to 10. If I put number 2,4 and 8 for "N" "Cannot find solution" error appears. Numbers 1,3,5,6,7,9,10 solve equation but variable "P" gives strange results (for example if I put for "N" 1000 "P" is 15 instead of 1562,5). Thanks [attachment=3386][attachment=3387][attachment=3388][attachment=3389] RE: Solve App problem - informach - 04-16-2016 12:39 AM Hi!: See, in the User Guide, how you can, input equation's and variables, Chapter 14, pages 289/296. http://support.hp.com/us-en/product/HP-Prime-Graphing-Calculator/5367459/model/5367460/manuals Kind Regards. Maké. RE: Solve App problem - kruki - 04-17-2016 01:06 AM I read all chapter 14 but don't now what I'm doing wrong. Is there a way to install old program that I mentioned before "solvesys 49 (solvesys.lib)" originally written for HP49/50 to HP Prime? Thanks RE: Solve App problem - informach - 04-17-2016 01:14 PM Hi!, kruki: You can Solve App, only, one equation, each time. See, from ... http://www.hp-prime.de/en/category/21-solutions-apps Kind Regards. informach. RE: Solve App problem - Tim Wessman - 04-17-2016 04:13 PM (04-17-2016 01:06 AM)kruki Wrote:  I read all chapter 14 but don't now what I'm doing wrong. Is there a way to install old program that I mentioned before "solvesys 49 (solvesys.lib)" originally written for HP49/50 to HP Prime? Thanks No, there is not any way to install it. Note however that the problem you are reporting in the android app you see should be resolved with the next android update. RE: Solve App problem - kruki - 04-17-2016 08:32 PM Thank you all for your answers! Yes, the only way to solve more equations is to solve one by one as informach said. Too bad that there is no program (at least I do not know) for HP Prime like "solvesys 49" for HP49/50 where you can add nonlinear equations and calculate them all at the same time. Best regards. kruki