Pre-calculus
High School
Pre-calculus

Pre-calculus equips you with the language and tools of modern mathematics. You’ll connect multiple representations (algebraic, graphical, numerical, verbal), justify steps with definitions and theorems, and apply concepts to real data and scenarios. Each unit includes guided practice, challenge problems, and checks for understanding.


Across ten units, you will analyze and transform functions (including composites and inverses), prove and use trigonometric identities, extend the number system to complex numbers in rectangular and polar forms, model with rational functions and conics, operate with vectors and matrices, count and measure chance with combinatorics and probability, sum sequences and apply the binomial theorem, and finally reason about limits and continuity—the conceptual gateway to calculus.

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