Algebra - Matrix and det..

1

mkagenius ·2009-02-18 05:57:07

ok! now understood...

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62

Lokesh Verma ·2009-02-19 06:43:12

cool.. :)

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Abhishek Priyam ·2009-02-19 06:36:08

yes i am also getting 0..

Let D=|(A-A')²⁰⁰⁹| ..........(i)

now D=|((A-A')²⁰⁰⁹)'| .... as |A|=|A'|

D=|((A-A')')²⁰⁰⁹|
D=|(A'-A'')²⁰⁰⁹|
D=|(A'-A)²⁰⁰⁹|)
D=(-1)³|(A-A')²⁰⁰⁹| .......(ii)

from (i) and (ii)

D=0

So none of these

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voldy ·2009-02-18 18:07:56

the det of any skew symmetric matrix of order 3 is always zero.

so none is correct.

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Abhishek Priyam ·2009-02-18 08:30:25

A-A' is skew symmetric ..

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Abhishek Priyam ·2009-02-18 08:18:03

:O

and is | | of skew symmetric matrix zero.. :O

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Abhishek Priyam ·2009-02-18 08:10:38

no nothing more and answer none of these.. [4]

par aisa bhi question hota hai... can't say anything.. :P

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62

Lokesh Verma ·2009-02-18 08:08:51

was the answer none of these?

or was something more given about A?

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Abhishek Priyam ·2009-02-18 07:52:02

options given were:

2009|A|
2009|A|²
2009
None of these..

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3

msp ·2009-02-18 05:59:04

is there nething or something given abt det(A)

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skygirl ·2009-02-18 04:35:52

anything .. [3]

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skygirl ·2009-02-18 05:50:38

[3]

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mkagenius ·2009-02-18 05:37:49

is anything a subset of anything or the counterpart....???!!!!!????

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mkagenius ·2009-02-18 05:33:00

bhaiya told "cant say anything"....."dats y got anything :P :P"..
.....din get!?!?!?!?!

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skygirl ·2009-02-18 05:17:36

dats y got anything :P :P

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Lokesh Verma ·2009-02-18 04:50:21

Huh!!

what is this question! :(

What we can say is that the matrix will be skew symmetric..

what else?

0 1 0
-1 0 a
0 -a 0

I think we cant say anything

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Abhishek Priyam ·2009-02-18 04:39:33

me too none of these.. but what is it actually equal to..

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Abhishek Priyam ·2009-02-18 04:38:17

anything... :O

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skygirl ·2009-02-18 04:37:29

came in fjee naa ??

i took A as something and saw nothing is matching ... so gave none of these... [2]

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Matrix and det..

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