The Purplemath Forums

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Rules for posting and helping, along with guides for formatting and explanations of what to expect. Post "test" messages here.

News
Updates, outages, etc. Post here with requests for resources or modifications.

Arithmetic
Fractions, ratios, percentages, exponents, number patterns, word problems without variables, etc.

Pre-Algebra
Simple patterns, variables, the order of operations, simplification, evaluation, linear equations and graphs, etc.

Beginning Algebra
Simplificatation, evaluation, linear equations, linear graphs, linear inequalities, basic word problems, etc.

Intermediate Algebra
Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.

Advanced Algebra ("pre-calculus")
Complex numbers, rational functions, logarithms, sequences and series, matrix operations, etc.

Geometry
Geometric formulae, word problems, theorems and proofs, etc.

Trigonometry
Trigonometric ratios and functions, the unit circle, inverse trig functions, identities, trig graphs, etc.

Calculus
Limits, differentiation, related rates, integration, trig integrals, etc.

Discrete Math
Sequences, counting (including probability), logic and truth tables, algorithms, number theory, set theory, etc.

Matrix (Linear) Algebra
Linear spaces and subspaces, linear transformations, bases, etc.

Statistics
Standard deviation, mean, variance, z-scores, t-tests, etc.

Uncategorized
Topics that don't fit anywhere else.