I have this:
-6 + Sqrt 6^2 - 4*1*6
2*1
so following this through i ended up at:
-3 + Sqrt 6
but the answer in my book is saying i should have the square root of 3.
How does square root of 12 divided by 2 end up as square root of 3 instead of 6 (12/2)??
probably really simple but after reading about eigenvalues and dynamic matrix for the last hour my heads just hurts......