The gem allows you to perform mathematical operations like addition od two numbers, subtraction, multiplication, division.

Standard rails extentions I find quite handy time to time

Replaces LaTeX math-mode markup with Unicode characters wherever possible.

Symblic Mathmatics library inspired by SymPy and dxdy

MathML Library

Emiyha - basic 3D math extensions

Library that provides more mathematical functions/algorithms than standard Ruby.

This is a library containing simple mathematical functions.

Converts LaTeX math into MathML.

This version include two important page 'Contact' and 'Register' with the 'Math-Captcha' method submit for prevent hacker attack.

solve simple math problems

== DESCRIPTION: Charlie is a library for genetic algorithms (GA) and genetic programming (GP). == FEATURES: - Quickly develop GAs by combining several parts (genotype, selection, crossover, mutation) provided by the library. - Sensible defaults are provided with any genotype, so often you only need to define a fitness function. - Easily replace any of the parts by your own code. - Test different strategies in GA, and generate reports comparing them. Example report: http://charlie.rubyforge.org/example_report.html == INSTALL: * sudo gem install charlie == EXAMPLES: This example solves a TSP problem (also quiz #142): N=5 CITIES = (0...N).map{|i| (0...N).map{|j| [i,j] } }.inject{|a,b|a+b} class TSP < PermutationGenotype(CITIES.size) def fitness d=0 (genes + [genes[0]]).each_cons(2){|a,b| a,b=CITIES[a],CITIES[b] d += Math.sqrt( (a[0]-b[0])**2 + (a[1]-b[1])**2 ) } -d # lower distance -> higher fitness. end use EdgeRecombinationCrossover, InversionMutator end Population.new(TSP,20).evolve_on_console(50) This example finds a polynomial which approximates cos(x) class Cos < TreeGenotype([proc{3*rand-1.5},:x], [:-@], [:+,:*,:-]) def fitness -[0,0.33,0.66,1].map{|x| (eval_genes(:x=>x) - Math.cos(x)).abs }.max end use TournamentSelection(4) end Population.new(Cos).evolve_on_console(500)

Gem for mathematical functions

This gem will help you to solve Abramov book math tasks.

Fast Implementation of Gruber's Markdown in C With Math(LaTex, MathJax) Support

This is a Ruby gem for converting Office Math Markup (OMML) into MathML within Word HTML documents.

This gem allows perform mathematical operations in the field.

random math questions generator

gem is created for testing some solutions of math-tasks

A simple ruby gem for encoding and decoding strings using the Solitaire Cipher.