"Integral" is an easy to use free and open-source (LGPL v3) application to calculate mathematical integrals with many features :
"Integral" runs on Maemo 4 (Nokia N800/N810, etc), Maemo 5 (Nokia N900) or any smartphone/tablet/computer where Python, SymPy and PyQt are available. Future versions will use PySide and QML.

SymPy is a computer algebra system (CAS) written in pure Python, it is free and open source project, see SymPy last version (0.7.1, July 2011) is available for Maemo 4 (Diablo) and Maemo 5 (Fremantle), see the SymPy thread in Talk

  Integral for Maemo 4 & 5
See also the "Integral" topic in Talk

Undefinite Integral of 1 variable
Undefinite integral of one variable on Nokia N900. The calculation time on is shown in green, the non-calculated integral in blue and the result in black (with 8 zoom levels). The Nokia N810 runs in 5.92 s.
Undefinite Integral of 1 variable
Undefinite integral of one variable using greek characters on Nokia N810. They can be seen with the help of line completion editing of the integrand, differentials and limits. The Nokia N900 runs in 26.60 s.
Definite Integral of 2 variables
Definite integral of 2 variables with infinity for the upper limits on Nokia N810. The Nokia N8x0/N900 are fast enough to calculate useful integrals even in 2 and 3 dimensions. The Nokia N900 runs in 13.23 s.
Numerical Integral of 3 variables
Numerical integration in 3 dimensions that takes 591 seconds on a Nokia N900 @ 600 MHz.
It is possible to use an arbitrary number of digits, but when greater than 15 digits the numerical calculations are significantly slower. On Nokia 810 it takes 1212 s.
Integral menu
The menu of "Integral" on Nokia N900 : "Zoom in", "Zoom out" and "Help" are new features from version 1.1.0. Next versions will have "Share".
Settings for Integral
There are many settings for "Integral", here the default ones are shown on Nokia N900. "Symplify terms" can take a long time for large results, when it is better to choose "None" or "Expand terms/all" as simplification method if calculation time is important for non-numerical integration.

Integral v1.0.0 (2011-08-11) :
Integral 1.1.0 ((12/09/2011) :
Integral 1.1.1 (14/09/2011) :
Integral 1.1.2 (15/09/2011)  - current version for Maemo 5 :
Integral 1.1.3 (06/10/2011) for Maemo 4 :
Integral 1.1.4 (08/10/2011) for Maemo 4 :
Integral 1.1.6 (23/10/2011) - current version for Maemo 4 :
To-do list for Integral :

Download, Install & Run

See also Limit and Derivative, very easy to use softwares to calculate mathematical limits and derivatives.

Following softwares, all free and open-source, using Python&SymPy and Qt :

Author : Roberto Colistete Júnior (replace the " arroba " by "@")

Last updates : 06/11 (v1.1.2 for Maemo 5 is in extras), 23/10 (v1.1.6 for Maemo 4), 09/10 (v1.1.4 for Maemo 4), 08/10 (v1.1.3 for Maemo 4), 15/09 (v1.1.2), 31/08 (v1.0.2 compatible with SymPy 0.7.1), 10/08 (v1.0.0), 09/08 (.deb of v0.9.9), 05/08, 03/08 (v0.9.1), 30/06, 28/06/2011 (v0.8). - free web hosting. Free hosting with no banners.
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