I know what it means for a function to be continuous, and I can determine how to make a piecewise-defined function continuous, determine if a function is left-continuous or right-continuous, and determine the type of a discontinuity.
2b: Limits with infinite inputs
I can evaluate a limit as x approaches positive or negative infinity.
2c: Secant slopes
I can use secant slopes to estimate the slope of a tangent line/derivative.
2d: Derivative definition
I can find the derivative of a function using the limit definition.
2e: Equations of tangent lines
Given a function, I can find an equation of the tangent line at a specified point.