Undefined points of a function

  1. Apart from visualizing firstly the maximum bounds of a function on a graph (domain), what are algebraic indications that some complex function does not exist at a given point? I know that if you evaluate a function that results in dividing by zero, the point is undefined. If you end up taking a square root of a negative number, the point was undefined.

    Are there other ways to conclude the point does not exist on the function? Is there a formula that spits out the points that are undefined of a function?
  2. jcsd
  3. Do you mean complex as in complicated or as in real+imaginary?
    Evidently not the latter. :smile:
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