Introduction

Types of Discontinuity

The limit from the left = the limit from the right = f(a), which makes the function continuous at that particular value "a"
The limit from the left = the limit from the right $LaTeX: \ne$ f(a), which means that although the limit exists, the function has a discontinuity at "a" called a hole
The limit from the left $LaTeX: \ne$ the limit from the right, so the limit does not exist. If the limit one of the sides = f(a), then there is likely a jump discontinuity.
The limit does not exist and the function approaches infinity or negative infinity on either side, so there is a vertical asymptote at the value "a".

Submit #10a, 11a, 12a from the above practice.