Discrimant and matrices

1. Apr 16, 2014

Jhenrique

2. Apr 16, 2014

micromass

The answer is in the very wiki article that you cite.

3. Apr 17, 2014

Jhenrique

It's true, sorry!!!

The formula is too complex that I didn't recognize at 1st vista.

4. Apr 20, 2014

Jhenrique

But exist in somewhere in the internet the matrix formula (already replaced by coefficients) for the quadratic, cubic and quartic discriminant?

5. Apr 20, 2014

micromass

Yes, of course. The wiki link gives the general formula. So just take a specific $n$.
It also gives the formula for $n=4$.