Computing Basic Limits - Direct Substitution

The easiest way to evaluate a limit is to directly plug in the value of xx.

Example:

limx→1(3x+2)\lim_{x \to 1} (3x + 2)
  • Plug in x=1x = 1: $3(1) + 2 = 5$

Since there's no division by zero or undefined behavior, the limit is just the function value at that point.

This method works when the function is continuous at the point you're approaching.

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