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The Precalculus course covers complex numbers; composite functions; trigonometric functions; vectors; matrices; conic sections; and probability and combinatorics. It also has two optional units on series and limits and continuity.
Get ready for Precalculus; Get ready for AP® Calculus; Get ready for AP® Statistics
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Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
Learn AP®︎ Calculus BC—everything from AP®︎ Calculus AB plus a few extra goodies, such as Taylor series, to prepare you for the AP®︎ test.
If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.
Get ready for Precalculus; Get ready for AP® Calculus; Get ready for AP® Statistics
Learn what vectors are and how they can be used to model real-world situations. Perform various operations with vectors like adding, subtracting, scaling, and conversion between rectangular to polar coordinates.
How do you add up infinitely many numbers? What patterns can you find in sequences of fractions, decimals, or powers? These articles, activities, and videos will get you practicing using formulas, notation, and graphs, and prepare you for working with sequences and series in precalculus and calculus.
Get ready for Precalculus; Get ready for AP® Calculus; Get ready for AP® Statistics