HP Prime and the ARG() bug.

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  • Опубліковано 23 гру 2024

КОМЕНТАРІ • 13

  • @leeprimeroessler3277
    @leeprimeroessler3277 2 роки тому +2

    I’ve noticed that. Acctually, there is a few issues with CAS and complex numbers. I always switch to Home screen during complex calculations.

    • @rolinychupetin
      @rolinychupetin  2 роки тому

      Yes, as long as I don't need to solve equations and such, I work on HOME mode too. It is smoother (and it is HP 100% code). In CAS, the trig functions work in DEG mode, but the ARG function continues to return radians, that is why, in CAS, I advise my students to work in RAD mode, safer that way.

  • @kcher
    @kcher 2 роки тому +1

    Thank you for sharing that info.

  • @technics6215
    @technics6215 2 роки тому

    There is no function that simply convert degrees to radians?

    • @sheepcommander_
      @sheepcommander_ 2 місяці тому

      180_deg STO 1_rad
      (press the Sto> button, either from the screen or {Shift} {EEX} button)

  • @pcuimac
    @pcuimac 2 роки тому +2

    I never calculate in degrees, because physics formula mostly use radians and you always can convert by foot.
    What happens, if you don't remove the EXACT flag? Of course I can try myself. ;)

    • @rolinychupetin
      @rolinychupetin  2 роки тому +2

      Actually, I set the EXACT flag back on. With it on, the answers come out as "exact" expressions with integers and rational numbers, and the occasional root. Then, to get the floating point value that I use in engineering, I need to use either evalf(), or the approx key (shift enter). If it is not too much extra hassle, leave the EXACT mode on. I did.

  • @dooda1193
    @dooda1193 2 роки тому +1

    good

  • @kemalnottaturk2500
    @kemalnottaturk2500 Рік тому

    Thanks for the video. I try to reproduce this with the April 2023 firmware and can't. Anyone else?

    • @rolinychupetin
      @rolinychupetin  8 місяців тому

      Happily, I think the XCAS community (it's open source), corrected that bug in its latest release. However, I still use my own argd() p2r() and r2p() functions. They are very much part of my workflow. And the payoff has been great, less grief when phases are in degrees, but I need to compute a value at a point in time (for which I need the4 phase in radians).

  • @iloal100
    @iloal100 2 роки тому

    Por favor traducir a español