Mathematics - Calculus - Pre-Calculus - Limits introduction - Understanding Limits
8 steps: (1) lim(x→a) f(x) = L means: as x gets closer to a, f(x) gets closer to L. (2) We DON'T need f(a) to exist! The limit is about what happens NEAR a, not AT a. (3) Left-hand limit: lim(x→a⁻) from values less than a. (4) Right-hand limit: lim(x→a⁺) from values greater than a. (5) Limit EXISTS