Singularity

Discontinuity: A point in a function where there is an abrupt change or break, causing the function to be undefined or have different values on either side.

Asymptote: A line that a graph approaches but never touches. It can be horizontal, vertical, or slanted.

Limit: The value that a function approaches as the input (x) gets arbitrarily close to a certain value. It helps determine behavior near singularities.