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One comprehensive reference per course — free with an account
Publication-quality formula sheets covering every major topic. Each sheet compiles all the key formulas, theorems, and concepts from an entire course into a single reference — open any sheet to view in your browser or download as a PDF.
Essential math from Pre-Algebra through Pre-Calculus
Operations, fractions, decimals, and percentages
Tricks, shortcuts, and mental calculation strategies
Integers, expressions, equations, inequalities, and basic geometry
Linear equations, inequalities, polynomials, and quadratics
Advanced functions, matrices, conics, and sequences
Unit circle, identities, graphs, laws of sines and cosines
Functions, limits preview, polar coordinates, and vectors
Shapes, angles, area, volume, and coordinate geometry
The calculus sequence and differential equations
Limits, derivatives, and applications of differentiation
Integration techniques, sequences, series, and convergence tests
Vectors, partial derivatives, multiple integrals, and vector calculus
Full AB and BC exam scope, with BC-only material marked
Marginal analysis, optimization, and multivariable basics
First/second order, Laplace transforms, and systems
Gradient, divergence, curl, and the integral theorems
Proof-based and upper-level undergraduate topics
Logic, proof techniques, sets, functions, and relations
Matrices, vector spaces, eigenvalues, and transformations
Sequences, series, continuity, differentiation, and integration
Complex functions, contour integration, and residue theory
Topological spaces, continuity, compactness, and connectedness
Fundamental groups, homology, and covering spaces
Graphs, trees, coloring, matching, and network flow
Axioms, ordinals, cardinals, and the continuum hypothesis
Curves, surfaces, curvature, and Riemannian geometry
Groups, rings, fields, and homomorphisms
Vector spaces, operators, and spectral theory
Axioms, rigorous proofs, and non-Euclidean geometry
Sigma-algebras, Lebesgue integration, and convergence
Banach and Hilbert spaces, operators, and duality
Probability, statistics, discrete math, and more
Distributions, expectation, Bayes theorem, and limit theorems
Descriptive stats, inference, regression, and hypothesis testing
Logic, counting, graphs, recurrences, and number theory
Primes, modular arithmetic, Diophantine equations, and cryptography
Counting, generating functions, Catalan numbers, and PIE
RSA, Diffie-Hellman, AES, and hash functions
Propositional logic, predicate logic, and model theory
Root finding, interpolation, quadrature, and error analysis
Differential equation models, optimization, and simulation
Linear programming, convex optimization, and KKT conditions
Nash equilibria, mixed strategies, and evolutionary games
Fourier series, transforms, DFT, and applications
Heat, wave, and Laplace equations with solution methods
Vectors, matrices, transformations, and eigenvalues
Markov chains, Poisson processes, and random walks
Interest, options pricing, and portfolio theory
All 45 formula sheets are free to browse — one for every course. Pick your subject below and start studying.
Browse All SheetsEvery formula, theorem, and key concept from an entire course compiled into a single reference. No flipping through textbooks.
Professionally designed with color-coded sections, dense multi-column layouts, and crisp formatting — ready to print or save as PDF.
Each sheet is built from our course content. Learn the concept in the lesson, then reference the formula during practice.
Formula sheets are great for reference, but understanding comes from practice.
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