Nifty little calculator!

]]>JavaScript: Matrix Calculator : I checked Matrix Calculator of A +B, A - B, AB, det(A), and inv (A). Works fine, MathsIsFun!

]]>Would be nice if you guys could check it for errors.

(Also have not converted the Latex formatting yet, sorry.)

]]>I am happy. Worked fine. Tried it out on inverting the 5 x 5 Hilbert matrix, this has a condition number of around 500 000 to 1 000 000 ( ratio between the largest and smallest eigenvalue). Numerical stability of your method to invert wasn't bad. Incidentally it got the determinant of the the 5 x 5 Hilbert matrix correct.

]]>* determinant now right for "1 2 3 ..." matrix

* there is now a "latex" option for output. Should work inside a math tag

* use Tab key: it selects entire next cell

* input cells text is now on one line (so "-" should stay attached to text)

* output is now not editable (no time at the moment to handle "parsing" text input ... maybe in future)

(use refresh and look for v0.52 at bottom)

]]>I notice you can directly edit the answer matrix but you cannot store it back into A or B.

]]>Two things:

- When you click on the cell of a matrix, I think it'd be good if the current contents got highlighted so you can type over them.

- When a result has a big negative number (big in size, so -0.00001 would count) then trying to transcribe the result over to a matrix makes that cell only display "-". The value is stored properly though, so it's just a visual thing.

]]>Cool! Can you get it to output in latex if I want it that way? Also how about in addition to the sliders you have size input boxes too.

Here is a problem,

for this one I am getting.

The det(A) is 0 not 3.199999999

Also because the determinant is 0 this matrix is singular, no inverse.

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