# Topics with many videos

Here's a list of topics for which there are more than 50 videos. I always welcome additional videos for these topics, but please consider making videos for those topics which have few or no videos, as this will provide the greatest benefit to students.

- Complex analysis
- Adding and subtracting complex numbers
- First derivative using implicit differentiation
- Conditional statements
- SAT math
- Venn diagrams (probability)
- Integration by u-substitution (less difficult)
- Related rates
- Direct variation
- Parabolas
- Finding polynomials given complex zeros
- Graphing piecewise functions
- Graphing linear equations in standard form
- Solving literal equations
- Solving quadratics by factoring (difference of squares)
- Solving square root equations
- Graphing linear inequalities in standard form
- Inverse trigonometric functions
- Special education
- Solving linear equations (word problems)
- Simplifying complex fractions with variables
- Graphing parabolas in standard form
- Graphing parabolas in vertex form
- Microsoft Excel
- Rational zeros theorem
- Double and half angle formulas
- Applications of derivatives
- Two column proofs
- ACT math
- Classifying polynomials
- Characteristics of functions
- Higher order derivatives
- Derivatives of transcendental functions
- Multiplying radical expressions
- Descartes's rule of signs
- Finding angles on parallel lines (harder)
- Solving monic quadratics by factoring
- Solving non-monic quadratics by factoring
- Finding the other zeros given rational zeros
- Finding polynomials given rational zeros
- Functions (precalculus)
- Rational functions (precalculus)
- Simplifying polynomial expressions
- Proof by induction (divisibility)
- Solving rational equations (word problems)
- 3D vector operations
- Using the theorem
- Practice: Verifying trigonometric identities
- Proof by induction (simplifying sums)
- Proving limits using the squeeze theorem
- Condensing logarithmic expressions: Practice
- Solving exponential equations using the one-to-one property: Practice
- Dividing polynomials using synthetic division: Practice
- Graphing the sine and cosine functions under transformations: Practice
- Simplifying fractional powers: Practice
- Finding limits of trigonometric functions: Practice