Learn Graphing
Short, practical guides to the ideas behind the graphs — written to be read alongside the calculator, with expressions you can try yourself.
What Is a Function? Domain, Range, and Notation
Learn what a function really is: inputs, outputs, domain, range, and f(x) notation — with concrete examples you can graph yourself.
Derivatives: Understanding Rate of Change and Slope
What a derivative measures, how it gives the slope of a curve, and how to read increasing, decreasing, and extreme points from it.
Integrals and the Area Under a Curve
Learn what definite integrals mean as signed area under a curve, how the Fundamental Theorem links integrals to derivatives, and when to use them.
Asymptotes: Vertical, Horizontal, and Oblique
Understand asymptotes — lines a graph approaches but never touches. Covers vertical, horizontal, and oblique asymptotes with clear examples.
Graphing Inequalities in Two Variables
How to graph inequalities like y > x^2: boundary curves, dashed vs. solid lines, shading, and testing points — explained step by step.
Parametric vs Cartesian Equations
Cartesian equations y = f(x) vs parametric equations x(t), y(t): what each can express, when to use which, and how to convert between them.