# Undefined points of a function

by Square1
Tags: function, points, undefined
 P: 111 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?
P: 211
 Quote by Square1 what are algebraic indications that some complex function does not exist at a given point?
Do you mean complex as in complicated or as in real+imaginary?
 If you end up taking a square root of a negative number, the point was undefined.
Evidently not the latter.

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