• Custoslibera@lemmy.world
    0·
    10 months ago

    I have never used a Cartesian plane in my life except for maths class.

    Distinctly remember thinking I will never use this as well as I learnt it.

  • somegeek@programming.dev
    0·
    10 months ago

    I’m not a math guru but there are only 4 shapes in this and there are 5 functions? You can describe a circle with a single function. Someone explain?

    • akari@lemmy.blahaj.zone
      0·
      10 months ago

      f and g form the top an bottom of the circle. note that they only differ by a single sign

      you need two of them because a circle can’t be expressed by a single function of x as it needs to map every x value to 0 to 2 y values

    • Chrobin@discuss.tchncs.de
      0·
      10 months ago

      Well, you can describe a circle with a single function if you look at a function R -> R^2. But a circle can’t be the graph of a single function.