
February 22nd, 2003, 08:54 AM
#1
Banned
Math Problem
Math problem unsolvable, and tomorrow's mah exam.
I posted this a while ago, and it came under some other users name, so deleted it and now :
 a^2 a^2(bc)^2 bc 
 b^2 b^2(ca)^2 ca 
 c^2 c^2(ab)^2 ab
It has be solved without expanding and with matrices.
Yelp Yelp, exam tomorrow !

February 22nd, 2003, 09:11 AM
#2
Senior Member
listen up buddy, aint go no time to give a complete solution now.
I'm sure you know some of it, so i'll just tell ya in text.
btw, this is the wrong website to post math problems.
The solution :
From row2, make it two matrices.
The first matrix should go off because of two similiar rows.
Now the second one looks like this :
 a^2 (bc)^2 bc 
 b^2 (ca)^2 ca 
 c^2 (ab)^2 ab 
Apply C2 > C1+C2+ 2* C3
Now row two has similiar values, expand through C12 and solve.
This is most probably right, considering what i know.
inv
Edit : i posted the solution once, thought it was wrong, here is a small edit.
Edit 1 : Assuming a^2, means a square, and C1 means column1 etc.
\"I have a 386 Pentium.\"

February 22nd, 2003, 02:36 PM
#3
Banned
lol you make it sound very simple
Thank you anyway.

February 23rd, 2003, 09:05 AM
#4
Senior Member
Determinants normally dont post much of a problem.
Keep in mind, that :
1. Look at the To Prove, and try to make it simpler by going behind 2 steps.
2. Look at the given equation and try to go ahead 23 steps.
That normally solves it all.
Otherwise, just keep simplifying it as much as ya can, and try different permutations, and you shall be able to solve it.
inv
\"I have a 386 Pentium.\"
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