Math workpad

Widgets » Science » Math workpad

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Rating: +31 (login to vote)

by Opera widgets

V1.5 Nov 26, 2008 8:37:23 AM

A programmable workpad for mathematics.

This widget lets you evaluate complex mathematical expressions. All results are displayed, and you can use the answer from the previous expression directly. Some other features of this calculator are:
- 2D, 3D and vector graphing.
- Many built-in in functions for trigonometrics, calculus and more.
- Built in mathematical and physical constants.

You can also evaluate javascript in this widget. Not documented in the help right now is how to add custom javascript functions to your math environment. This can be done like this:
js controller.addFunction('f', 'function(x) { return 2*x; }');

Where f is the name of the function.

Update (2008-10-16):
- Ported to mobile.

Update (2008-08-21):
- Added support for ** as power operator in addition to ^ (2**4 == 2^4)
- Added solve function to solve linear and quadratic equations.

Comments 19 posts

1 - 19 of 19

"math is beautiful" my teacher

By littlebear91 , # Oct 30, 2009 3:04:45 AM

One minor notice - help should be little bit more user friendly for particular functions. Personally for me it wasn't clear what means " sum(function, a, b) ". What's that? It is not a sum of "f" function values in points "a" and "b", how it would come first to your mind. I understand it now, but i had to puzzle over it for some time and i still do not have even a clue how it works for non-integer arguments. And, BTW, what is a mysterious function "controller"? Again, no help associated ;-)
All after all - that's really great stuff! I like it - it's smart and simple. Many thanks for it!

By azeul , # Sep 5, 2009 12:36:12 PM

Excellent Widget. But I noticed that the vectorgrpah function uses the y coordinate in the -y (downwards) direction (for example: vfield(x,y)=(1,1), vectorgraph(vfield), draws (1,-1) arrows in the graph). It should have only one set of coordinate system (right-handed).

By fwu , # Aug 8, 2009 5:33:51 AM

Ma phone is a nokia 5300

By Varunmk , # Jul 10, 2009 3:47:50 PM

Pls tell me how to incoperate this widget to my opera mini . . I am not able to do so . . Pls help me . Varun

By Varunmk , # Jul 10, 2009 3:46:33 PM

very nice

By vladtarko , # Mar 13, 2009 10:48:32 PM

Amazing widget but it will take me time to master it.

By yeeliberto , # Nov 30, 2008 12:00:00 AM

As a programmer I must say this widget is a beauty! Thanks a lot!

By AleksOD , # Nov 26, 2008 10:21:02 PM

simply amazing, thanx!

By jiminikiz , # Nov 10, 2008 8:35:57 PM

Most useful for me
Thanks,

By 28sharan , # Oct 23, 2008 7:13:06 PM

This is an amazing widget!!!
It can do any plot, fast and really clean.
I love it.

By josemontero9 , # Sep 7, 2008 4:44:09 AM

Really a nice widget! Keep up the good work.

By PawlCrux , # Sep 6, 2008 8:14:43 AM

Wow, this is nice. +10!

Is there a way to list all user defined variables and functions? And maybe a way to quickly save them all?

Also, possible to have a factorial function or ! operator built in?

By tinhoy , # Sep 2, 2008 7:11:10 PM

Wow, an amazing tool, thanks!

By AleksOD , # Sep 2, 2008 2:00:34 PM

excellent

By donatofurlani , # Sep 1, 2008 1:08:14 PM

friend1250: Unfortunately you can't solve for variables right now. It would be quite hard to implement such a feature in a general sense. You can create a function to solve quadratic and cubic equations using their coefficients though. Maybe such a function should be included.

By skyfex , # Aug 19, 2008 8:27:55 AM

Rulezzz!1

By DonCiHot , # Jul 27, 2008 2:26:09 AM

oh man.. this is cool stuff.. I wish I had something like this visual during my college days...

By aboy0110 , # Jul 24, 2008 7:51:50 PM

this is a really nice widget, but i cannot figure out how to solove for variable.
i only need help from such mathematic things when i do quadratic functions with an unkown variable.... mind you, im not into trignomerty and 3d vectors or such.
i just need a little help.
thanks for the amazing widget though

By friend1250 , # Jul 21, 2008 5:02:21 PM