Math Formula Encyclopedia
Search, understand, and use formulas across arithmetic, algebra, geometry, trigonometry, calculus, statistics, finance, science, engineering, and everyday math.
134 formulas10 subjectsExamples + variables
AllAlgebra 16Arithmetic 8Calculus 15Everyday Math & Conversions 7Finance & Business 9Geometry 28Number Theory & Sequences 8Science & Engineering 16Statistics & Probability 16Trigonometry 11
5 matching formulas
Number Theory & Sequences
Arithmetic Series Sum
Sₙ = n(a₁+aₙ)/2
Sum of an arithmetic series.
Open formula →Number Theory & SequencesFinite Geometric Series
Sₙ = a₁(1−r^n)/(1−r)
Sum of first n terms of a geometric series.
Open formula →Number Theory & SequencesInfinite Geometric Series
S = a₁/(1−r)
Sum of a convergent infinite geometric series.
Open formula →AlgebraSum of Cubes
a³+b³=(a+b)(a²−ab+b²)
Common reference identity or relationship used in algebra.
Open formula →GeometryRegular Polygon Interior Angle Sum
S=(n−2)×180°
Common reference identity or relationship used in geometry.
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