LIM-1.C.1 The concept of a limit includes one sided limits.
LIM-1.C.2 Graphical information about a function can be used to estimate limits.
LIM-1.C.3 Because of issues of scale, graphical representations of functions may miss important function behavior.
LIM-1.C.4 A limit might not exist for some functions at particular values of x. Some ways that the limit might not exist are if the function is unbounded, if the function is oscillating near this value, or if the limit from the left does not equal the limit from the right.
Enduring understanding LIM-1: Reasoning with definitions, theorems, and properties can be used to justify claims about limits.