Comment on Let's do an integration 🫪

panda_abyss@lemmy.ca ⁨4⁩ ⁨days⁩ ago

f(t) = r(t)·[cos(t), sin(t)]; 
r(t) = 10t/(3π) − 9/2; 
t: 3π/2 -> 9π/4`

• tetris11@feddit.uk ⁨4⁩ ⁨days⁩ ago

  so f is a function that yield a value between the ribbons bounded by cos and sin scaled by r, which is just a linear line, and then you define the axis t itself as a mapping that multiplies 3/2 to everything.

  I give up, what is it? It sounds like a single point on a graph, but what is it solving

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  • panda_abyss@lemmy.ca ⁨4⁩ ⁨days⁩ ago

    It’s a parametric plot of an object that goes from straight down at 0.5 units, then expands to 3 units in a 45° upright angle.

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    • nastronot@lemmy.zip ⁨4⁩ ⁨days⁩ ago

      lol boob

      source
  • zaphod@sopuli.xyz ⁨4⁩ ⁨days⁩ ago

    f is a curve

    [cos(t), sin(t)]

    this is a vector that on it’s own would just create a circle/arc, r deforms the arc.

    source

    • tetris11@feddit.uk ⁨4⁩ ⁨days⁩ ago

      oooh, I thought it was a range

      source