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sreesuja
Average Member

India
13 Posts

 Posted - 07/10/2012 :  01:25:03 USING PROPERTY OF DETERMINANT AND WITHOUT EXPANDING PROVE THAT[1 1+P 1+P+Q ][2 3+2P 1+3P+2Q ] =I[3 6+3P 1+6P+3Q ]

royhaas
Moderator

USA
3059 Posts

 Posted - 07/10/2012 :  09:18:43 Try using row and column operations.

sreesuja
Average Member

India
13 Posts

 Posted - 07/11/2012 :  01:04:05 quote:Originally posted by royhaasTry using row and column operations.TRIED BUT NOT GETTING THE ANSWER

Ultraglide

299 Posts

 Posted - 07/11/2012 :  15:44:07 Show what you've done so far.

Subhotosh Khan

USA
9117 Posts

 Posted - 07/12/2012 :  14:25:57 quote:Originally posted by sreesujaUSING PROPERTY OF DETERMINANT AND WITHOUT EXPANDING PROVE THAT[1 1+P 1+P+Q ][2 3+2P 1+3P+2Q ] =I[3 6+3P 1+6P+3Q ]Multiple posts:http://mathhelpforum.com/advanced-algebra/200809-determinant.htmlhttp://www.mathisfunforum.com/viewtopic.php?pid=225242http://www.freemathhelp.com/forum/threads/76401-Algebra

Ultraglide

299 Posts

 Posted - 07/12/2012 :  16:58:00 I assume you mean one not I.Here's a hint: use the most complex row to reduce the determinant to three 2x2 determinants. It will work.
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