Hi everyone.
I've been doing determinants at school, however I've come across one which is making my head spin.
We've been told to simplify them as much as possible, adding or subtracting rows, columns together, taking factors out, etc to get as many 1's and 0's as possible so we can take out factors to construct a determinant.
However, I am really stuck on this bad boy.
I've tried adding the bottom row to the middle, then to the top, but I get an extra a^2, subtracting columns, rows etc, but everything I've tried so far has left me with just one factor out of place!
I would appreciate some help and guidance with this, please. I realise that it's going to look ugly before any nice happens, but I can only get to dead ends.
Many thanks for your time,
Sparky
I've been doing determinants at school, however I've come across one which is making my head spin.
We've been told to simplify them as much as possible, adding or subtracting rows, columns together, taking factors out, etc to get as many 1's and 0's as possible so we can take out factors to construct a determinant.
However, I am really stuck on this bad boy.
I've tried adding the bottom row to the middle, then to the top, but I get an extra a^2, subtracting columns, rows etc, but everything I've tried so far has left me with just one factor out of place!
I would appreciate some help and guidance with this, please. I realise that it's going to look ugly before any nice happens, but I can only get to dead ends.
Many thanks for your time,
Sparky
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