- Details
- Category: Matrix Calculator
- Published on Wednesday, 05 December 2012 13:17
- Written by Super User
- Hits: 1514

Fast and easy calculations with matrices on your android smartphone or tablet. Supports complex numbers. Easily upload and share your results.

** Supported operations:**

- Ax=B
- A+B, A-B, A*B
- scalar multiplication and power
- invert and transpose
- Decompositions: LU*, QR*, Cholesky*, Eigenvalues*
- Norms: 1-Norm, 2-Norm, Infinity-Norm, rank, determinant, condition
- complex numbers: complex conjugate, Hermitian conjugate, Re(), Im(), A+Bi
- reformat: unite right: [A B], unite down
- Store as many matrices as you want
- Share them as .csv or .html

- Details
- Category: Matrix Calculator
- Published on Friday, 12 October 2012 18:45
- Written by Super User
- Hits: 6362

The Android internet permission is only used to download Google Ads and to send crash reports through Androids Application Crash Report tool (ACRA) if the app should crash.

Calculations with real numbers use the java library JAMA, provided by the National Institute of Standards and Technology (NIST). Complex number computations are done with a custom implementation using two double precision numbers.

Numerical stability is bound by computing floating point precision (Wikipedia). Small errors in floating-point arithmetic can grow when mathematical algorithms perform operations an enormous number of times. A few examples are matrix inversion, eigenvector computation, and differential equation solving.

Numerical stability was improved in Version 1.2.4 thanks to customer feedback. Since Version 1.2.5 you can set the displayed number format in the settings. For more information on how you can set these values see the Java Documentation on DecimalFormat.

For internal number storage matrix calculator always uses 30 decimal places to preserve consistency, e.g. when calculating A*A^(-1).

Yes, we want to. All we need is your help: Simply download one of the language files below and replace all words between the tags >< with the appropriate phrase in your language. Then send us an e-mail with the file and we will include the language in our next release:

- Details
- Category: Matrix Calculator
- Published on Friday, 28 September 2012 11:59
- Written by Super User
- Hits: 3187

Fast and easy calculations with matrices on your android smartphone or tablet.

** Supported operations:**

- Ax=B
- A+B, A-B, A*B
- scalar multiplication and power
- invert and transpose
- Decompositions: LU, QR, Cholesky, Eigenvalues
- Norms: 1-Norm, 2-Norm, Infinity-Norm, rank, determinant, condition
- positive semidefinite
- Store as many matrices as you want
- Share them as .csv or .html