L lolcakes52 Member Joined Oct 31, 2011 Messages 286 Gender Undisclosed HSC 2012 Sep 13, 2012 #21 Pretty straight forward for n=3. Just factorise x^3 + y^3 + z^3... I think. We did it on tuesday in four unit.
Pretty straight forward for n=3. Just factorise x^3 + y^3 + z^3... I think. We did it on tuesday in four unit.
Carrotsticks Retired Joined Jun 29, 2009 Messages 9,494 Gender Undisclosed HSC N/A Sep 13, 2012 #22 lolcakes52 said: Pretty straight forward for n=3. Just factorise x^3 + y^3 + z^3... I think. We did it on tuesday in four unit. Click to expand... I think you meant x^2 + y^2 + z^2 - (xy + yz + xz)
lolcakes52 said: Pretty straight forward for n=3. Just factorise x^3 + y^3 + z^3... I think. We did it on tuesday in four unit. Click to expand... I think you meant x^2 + y^2 + z^2 - (xy + yz + xz)
barbernator Active Member Joined Sep 13, 2010 Messages 1,439 Gender Male HSC 2012 Sep 13, 2012 #23 Carrotsticks said: I think you meant x^2 + y^2 + z^2 - (xy + yz + xz) Click to expand... i think he means 2(x^3+y^3+z^3) = > x^2y + y^2x +.....+ z^2x = > xyz(......) = > 6xyz then let x = a^1/3 and bingo.
Carrotsticks said: I think you meant x^2 + y^2 + z^2 - (xy + yz + xz) Click to expand... i think he means 2(x^3+y^3+z^3) = > x^2y + y^2x +.....+ z^2x = > xyz(......) = > 6xyz then let x = a^1/3 and bingo.
soloooooo Well-Known Member Joined Feb 13, 2012 Messages 3,311 Gender Female HSC N/A Sep 13, 2012 #24 An impressive feat if the papers hold up to scrutiny.
Carrotsticks Retired Joined Jun 29, 2009 Messages 9,494 Gender Undisclosed HSC N/A Sep 13, 2012 #25 barbernator said: i think he means 2(x^3+y^3+z^3) = > x^2y + y^2x +.....+ z^2x = > xyz(......) = > 6xyz then let x = a^1/3 and bingo. Click to expand... Oh I had a slightly different proof in mind.
barbernator said: i think he means 2(x^3+y^3+z^3) = > x^2y + y^2x +.....+ z^2x = > xyz(......) = > 6xyz then let x = a^1/3 and bingo. Click to expand... Oh I had a slightly different proof in mind.