When we evaluate limits that are not continuous, we can use algebra to eliminate the zero from the denominator and then evaluate the limit using substitution. When evaluating limits algebraically we can eliminate the zero in the denominator by factoring or simplifying the function.
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How to evaluate the limit of a function at points where it is not continuous. Finding points of discontinuity of rational functions and canceling factors so that the function becomes continuous.
How to evaluate the limit of a function at points where it is not continuous by canceling factors in the numerator and denominator.
How to evaluate the limit of a radical function at points where it is not continuous by multiplying by the conjugate of the radical expression.