Wednesday, May 25, 2016

Android App Review: Matrix Calculator

Android App Review:  Matrix Calculator

Matrix Calculator
Platform:  Android
Version:  V 2.0.2, 4/21/2016
Price:  Free

This is a dedicated app to matrices.  It's as simple as that.  The operations available to you is dependent on the orientation of your device:

Portrait:  determinant (det), inverse (A^-1), transpose (A^T), matrix multiplication (*), clear
Landscape: det, A^-1, A^T, *, lower-upper decomposition (LU), matrix addition and subtraction

You can use the arrow keys to choose different elements in the matrix or create new rows and columns.  The other way is using the swiping motion. 

Matrices are automatically corrected. 

If you called an arithmetic operation (+, -, *), a new matrix is created.

I wish there was an easier way to delete elements, rows, and columns.  The only way to clear and delete elements is the repeated use of the [ C ] button.  If you were also expecting a scientific calculator with this app, then prepared to be disappointed.  This app is a single focus calculator, which is great if you work with matrices.  And you can’t beat the price.

Update (5/29/2016):  In a recent update, you can quickly clear entries and matrices by pressing and holding the clear key [C].  Thank you!

This blog is property of Edward Shore, 2016.

Casio Graphing Calculators: Equation Variables

Casio Graphing Calculators: Equation Variables Introduction Most modern Casio graphing calculators have an Equation solver...