About Math DragOn
Math DragOn is an application that combines the ease of a portable calculator with the power of a smartphone. The app features a very intuitive way of entering calculations with drag-and-drop using the touch screen of the smartphone. The calculations can not only be approximated, like a regular calculator would do, they can also be evaluated symbolically. For example: calculating the derivative of x^2 will give a nice 2x as result.
FEATURES:
- An easy-to-use drag-and-drop interface for composing calculations
- An easy-to-use keyboard, specialised for entering constants and variables
- The operators add, subtract, multiply, divide, power, root, derivative and integral
- The functions sin, cos, tan, arcsin, arccos, arctan, log and ln
- Favourites, save or load formulas you use often
- Exact evaluation and approximation: you can either evaluate an expression exactly or you can approximate the answer
- Substitute variables in your formulas
OPEN SOURCE
Math DragOn is open source, so the source is available under the LGPLv3 license.
See https://github.com/Divendo/math-dragon for the source code (and to participate).
FEEDBACK
All feedback is very much appreciated, so please feel free to contact the lead developer at mark@markkamsma.nl.
MADE BY TEAM INFINITY
This app was made by Team Infinity as a project for the University of Utrecht. The team members: Mark Kamsma, Arian van Putten, Folkert van Verseveld, Ivor van der Hoog, Bas van Rooij, Glenn Stewart and Tim de Jonge.
by K####:
I had high hopes, and they were mostly exceeded! It's thoroughly documented and has a ton of features! However, there's a few ways it could be improved: 1. The tutorials are an overlay, which is fine... But the app in the background is white with black text, and the light blue-purple just serves to both make the white slightly darker, and the black slightly lighter. Occasionally there's tutorial text on top of application text, and it can be really difficult to read. Making the overlay darker, and the tutorial text white (or a bright color in general) would help tremendously! 2. It's handy that I can turn the tutorial back on if I need a review, but there should also be a feature to end the tutorial early (so I don't run into a menu I already understand having the tutorial again when I don't expect it to). 3. It might be 'out of scope', but this calculator seems oriented around functions - and as such, I don't think it's inappropriate to ask for a function plotting feature! Such a thing can obviously take quite some time, so of course I don't expect it to be implemented immediately... But it's about the only feature that seems obviously missing that I can think of.