The most popular formulas - This is a list of formulas which have most downloads.
Set identities - Union, Intersection, Complement,Difference, Cartesian product
Complex numbers - Multiplication, Division, Polar form, De Moivre's theorem, Roots
Factoring and product formulas
Solutions of algebraic equations - Quadratic, Cubic and Quartic Equation
Trigonometry Formulas - Right-Triangle Definitions, Reduction Formulas, Identities, Sum and Difference Formulas, Double Angle and Half Angle Formulas, law of sines and cosines, area of triangle
Hyperbolic functions - Definitions, Derivatives, Hyperbolic identities, Inverse Hyperbolic functions
Lines in two dimensions - Line forms, Distance, Concurrent lines, Line segment
Triangles in two dimensions - Area, Centroid, Incenter, Circumcenter, Orthocenter
Circle - Equation of a circle, Area, Circumference, Chord theorem, Tangent-secant theorem, Secant - secant theorem
Conic Sections - Parabola, Ellipse, Hyperbola
Lines in three dimensions - Line forms, Distance, Intersection
Planes in three dimensions - Plane forms, Angle between two planes, Equation of a plane, Distance, Intersection
Common Derivatives + Basic Properties and Formulas
Higher-order Derivatives - definitions, properties and important formulas
Integrals of Rational Functions
Integrals of Exponential Functions
Arithmetic and Geometric Series
Power Series and Powers of Natural Numbers
Taylor and Maclaurin Series - definitions, binomial series, series for exponential, logarithmic, trigonometric and hyperbolic functions
Most popular formulas - list of math formulas that have been downloaded most number of times.