graphing functions

Forums Leaving Cert Maths graphing functions

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    • #227
      Anonymous

      :ill have an answer for you by the weekend

    • #12540
      Anonymous

      ill have an answer for you by the weekend

    • #12541
      Anonymous

      The word function is simply a maths term for the word rule. The
      letter f is the maths notation for a function.

      Take the function f(x)=2x+3. This function (rule) tells us to double
      (2) any number (x) and add 3 to it. So if we have the number 1 the
      ru

    • #12542
      Anonymous

      explain the rules of graphing functions in veryveryvery simple terms please

    • #12543
      Anonymous

      There are no real "rules" to the graphing part of functions. There is just a procedure. The rules only really apply to the function.

      To graph some given function:

      Draw in your planes, which for LC, is just the X-Y plane.

      Divide your X & Y lines into spcaes that would be suitable for this function.

      Plot points onto this XY plane using values that fit into this equation.

      Join your dots together. (The fun part!)

      If your function:

      only has an x variable, then it will be parallel to the X plane

      only has an y variable, then it will be parallel to the Y plane

      has both an x and y variable that are first order, then it is a line

      has only x or y variable that are quadratic, then it is a curve

      has both x and y variables that are quadratic, then it is a circle

      has an equation in the form ax^2 + by^2 + cxy + d = 0, then it is a parabola.

      I think that's all you need to know for the LC.

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