Iannix & Equations

Home Forums Making things with IanniX Iannix & Equations

This topic contains 5 replies, has 2 voices, and was last updated by  _203 2 years ago.

Viewing 6 posts - 1 through 6 (of 6 total)
  • Author
    Posts
  • #3833 Reply

    _203

    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.

    #3834 Reply

    IanniX
    Keymaster

    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
    #3838 Reply

    _203

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

    #3839 Reply

    _203

    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.

    #3840 Reply

    IanniX
    Keymaster

    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

    #3842 Reply

    _203

    Very good, thanks for your quick response Iannix.

Viewing 6 posts - 1 through 6 (of 6 total)
Reply To: Iannix & Equations
Your information:





© IanniX Association

What is IanniX? | Download | Showcase | Forums | Research | About