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Iannix & Equations

Accueil › Forums › Créer avec IanniX › Iannix & Equations

  • Ce sujet contient 6 réponses, 2 participants et a été mis à jour pour la dernière fois par braship, le il y a 2 semaines.
7 sujets de 1 à 7 (sur un total de 7)
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  • 17 novembre 2016 à 0 h 05 min #3833 Répondre
    _203
    Invité

    Hi,

    I’m totally unfamiliar with Trig in general, but I’d like to use this curve equation — (cos(t)+cos(29t)/2+sin(61t)/3, sin(t)+sin(29t)/2+cos(61t)/3) — in Iannix (and equations like it). It doesn’t work when entered into the curve equation window, can someone give me a brief explanation? How would I write it so Iannix understands it?

    Many thanks.

    19 novembre 2016 à 2 h 21 min #3834 Répondre
    IanniX
    Maître des clés

    Yep, you need 3 equations : how ‘x’ depends on ‘t’, ‘y’ depends on ‘t’ and z depends on ‘z’ (or in a polar way, how radius, angles depends on ‘t’).
    So you need 3 equations, not only one. Or you need to put constant values in other equations. You need something like that

    cos(t)+cos(29*t)/2+sin(61*t)/3
,
sin(t)+sin(29*t)/2+cos(61*t)/3
,
0
    22 novembre 2016 à 3 h 20 min #3838 Répondre
    _203
    Invité

    Fantastic! Thank you. I definitely have more studying to do.

    24 novembre 2016 à 2 h 52 min #3839 Répondre
    _203
    Invité

    Another q – is there a way to define a range of t? Like: -10 ≤ t ≤ 10? For example, if I head to http://graphsketch.com/parametric.php and plot cos(100t) on x(t), and sin(100t) on y(t) w/ the previously expressed range, I get what looks like a gear.

    Am I looking at this in an off way? Could you point me somewhere that can explain the basics of what I’m looking to do? Thanks again, appreciate you bearing w/ me & my lack of knowledge.

    24 novembre 2016 à 9 h 48 min #3840 Répondre
    IanniX
    Maître des clés

    In IanniX, t goes from 0 to 1. So instead of drawing f(t) with t going from -10 to 10, draw f((t+10)/(10--10)) = f((t+10)/20) = replace all the t by (t+10)/20

    30 novembre 2016 à 22 h 30 min #3842 Répondre
    _203
    Invité

    Very good, thanks for your quick response Iannix.

    9 novembre 2024 à 6 h 24 min #8090 Répondre
    braship
    Invité

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