Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

bobbym
2012-09-10 21:18:05

Hi yago.dorea;

Yes, there is good stuff here.

yago.dorea
2012-09-10 21:07:44

I'm glad I found this forum. I am being amazed by some topics in the "Dark Discussions at Cafe Infinity" section. Mainly one article about the Vandermonde Determinant.

bobbym
2012-09-10 20:19:38

Hi yago.dorea;

Your welcome and welcome to the forum.

yago.dorea
2012-09-10 19:46:56

Ah I got it, you start from the beggining, I was doing the cofactors of the last terms... Thank you!

bobbym
2012-09-10 19:31:28

Hi;

Try this pdf ( first page ) and see if any of it helps.

http://ocw.mit.edu/courses/mathematics/ … 0_soln.pdf

yago.dorea
2012-09-10 18:57:34

Hello, I want to prove that the determinant of Fibonacci's nxn tridiagonal matrix is equal to the (n+1)th term of the Fibonacci sequence.

I'm trying to do it by induction, stating that det(F(n)) = det(F(n-1)) + det(F(n-2)) (yeah I don't know how to use LaTex)
but I don't know how to prove that the minor M(n, n-1)(F(n)) = det(F(n-2))

Thanks.

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