Chapter 4
Functions
Product sets and their cardinality, relations and how to represent them, and what makes a relation a function — domain, range, the vertical line test, and function notation.
Chapter progress — 0/8 concepts0%
4.1 Product Sets
Try it yourself
🔬 Function Builder
Best on a larger screenBuild a function machine from simple operations, feed inputs through it, and figure out mystery functions from their outputs.
Try this: Drag operations (like ×2, +1) into the function machine, then send different input values through it.
Look for: In the "Mystery" screen, try to work out the hidden function purely from the input/output pairs it gives you.
Simulation by PhET Interactive Simulations, University of Colorado Boulder — licensed CC BY-NC. View on phet.colorado.edu ↗