← Algebra Course
UNIT 14 · LESSON 1

What a function really is

Understand input-output relationships used throughout higher mathematics.

WHY LEARN THIS?

This idea has a purpose.

Mathematics becomes much easier when you understand what a tool was designed to accomplish. This lesson will build What a function really is from the idea itself instead of asking you to memorize a rule first.

Places this kind of mathematics can appear:

computer software
economics
scientific models
machine learning
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