Math
Trigonometry and precalculus
Videos and exercises on trigonometry. Watch the "Geometry" playlist first if you have trouble understanding the topics covered here.
Community Questions
39
21
Graphing lines
Thinking about graphing on a coordinate plane, slope and other analytic geometry.
32
12
Functions and their graphs
Revisiting what a function is and how we can define and visualize one.
68
21
Polynomial and rational functions
Exploring quadratics and higher degree polynomials. Also in-depth look at rational functions.
18
Exponential and logarithmic functions
An look at exponential and logarithmic functions including many of their properties and graphs.
44
12
Basic Trigonometry
19
3
Trig identities and examples
7
Parametric equations and polar coordinates
An alternative to Cartesian coordinates.
22
9
Conic sections
A detailed look at shapes that are prevalent in science: conic sections
25
9
Systems of equations and inequalities
What happens when we have many variables but also many constraints.
25
6
Sequences and induction
An assortment of concepts in math that help us deal with sequences and proofs.
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8
Probability and combinatorics
Basics of probability and combinatorics
20
9
Imaginary and complex numbers
Understanding i and the complex plane
2
Hyperbolic trig functions
Motivation and understanding of hyperbolic trig functions.
7
2
Limits
Preview of the calculus topic of limits