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Last freeware versions

Mathematics

GraphCalc 1.21 (last freeware version)

GraphCalc

GraphCalc is an all-in-one solution to everything from everyday arithmetic to statistical analysis, from betas to Booleans, from cubes to calculus, from decimals to derivatives. GraphCalc combines all the features of a professional mathematics package with the simplicity of an easy to learn windows interface. It provides user-friendly help and tutorials to guide you through the easy and fun process of mastering GraphCalc.

Home (shareware)

(The main difference in the versions is that the Shareware version has 3D graphing and the Freeware version is limited to 2D graphing.)

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SpeQ

SpeQ

SpeQ is a small, extensive mathematics program with a simple, intuitive interface. All calculations are entered in a sheet. In there you can freely add, edit and execute all calculations. You can define variables and functions, and plot graphs of your functions. You can save your calculations for later re-use.

SpeQ is written to be an advanced but very easy to use math program. It is small and fast and runs on every Windows computer, also from an USB-key or floppy disk. SpeQ is usefull for simple, brief calculations as well as working out sheets with extensive variable definitions, functions and complex calculations.
SpeQ is usable for engineers, students and pupils or simply as replacement of the Windows Calculator.

SpeQ has the following features.

  • Expression calculations with arithmetic, conditional, logical and bitwise operators
  • Around 100 built-in mathematical, physical and conditional constants
  • Around 60 built-in functions for Analysis, Arithmetic, Complex numbers, Hyperbolic, Integers, Probability, Numeral systems, Statistics, Trigonometry
  • Define your own variables and functions for use in calculations
  • Plot fully adaptable graphs, trace the plotted functions, save your graphs
  • Decimal, binary, hexadecimal and octal numeral systems
  • Complex number calculations
  • Colored workarea
  • Save and load sheets
  • Orderly overview of all available functions and constants in the Functionstree
  • A list with all defined variables and functions in the Memorylist
  • Context-sensitive help and a detailed users guide

SpeQ has very low system requirements. It runs on practically every Windows computer.

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Scilab

Scilab is a scientific software package for numerical computations providing a powerful open computing environment for engineering and scientific applications. Developed since 1990 by researchers from INRIA and ENPC, it is now maintained and developed by Scilab Consortium since its creation in May 2003. Distributed freely and open source (see the license) via the Internet since 1994, Scilab is currently being used in educational and industrial environments around the world. Scilab includes hundreds of mathematical functions with the possibility to add interactively programs from various languages (C, Fortran...). It has sophisticated data structures (including lists, polynomials, rational functions, linear systems...), an interpreter and a high level programming language. Scilab has been designed to be an open system where the user can define new data types and operations on these data types by using overloading. A number of toolboxes are available with the system:
- 2-D and 3-D graphics, animation
- Linear algebra, sparse matrices
- Polynomials and rational functions
- Simulation: ODE solver and DAE solver
- Scicos: a hybrid dynamic systems modeler and simulator
- Classic and robust control, LMI optimization
- Differentiable and non-differentiable optimization
- Signal processing
- Metanet: graphs and networks
- Parallel Scilab using PVM
- Statistics
- Interface with Computer Algebra (Maple, MuPAD)
- Interface with Tck/Tk
- And a large number of contributions for various domains.

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Graph

Graph is a freeware program used to draw mathematical graphs in a coordinate system. Anyone who wants to draw graphs of functions will find this program useful. The program makes it very easy to visualize a function and paste it into another program. It is also possible to do some mathematical calculations on the functions.

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