Maths

Everything the syllabus asks for, working in the browser with nothing to install and nothing sent anywhere. Written against OCR MEI, so the conventions match the formula book: quartiles by the median of each half, sample standard deviation over n − 1, and both triangles when the sine rule is ambiguous.

14 tools

Algebra

4

Equation SolverPolynomial roots and simultaneous equations MatricesInverse, eigenvalues and more, up to 5 by 5 Complex NumbersComplex arithmetic on an Argand diagram SequencesArithmetic and geometric sequences and sums

Calculus and analysis

2

Graphing CalculatorPlot four functions and read off their roots Numerical MethodsNewton Raphson, bisection, Simpson's rule

Geometry

2

VectorsDot, cross, angles, projections and more Triangle SolverSine and cosine rule from three measurements

Data

2

StatisticsMean, quartiles, deviation, a box plot DistributionsBinomial, Poisson and normal probabilities

Arithmetic

4

CalculatorStandard, scientific, programmer and RPN Base ConverterBinary, hex, decimal, octal, any radix Unit ConverterLength, mass, temperature, speed and volume Prime CheckerPrimality, factors and nearby primes