Math Is Fun Forum

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 706

Determinants

What does the determinant of square matrix mean and how it works?

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"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

Bob

Administrator

Registered: 2010-06-20

Posts: 10,619

Re: Determinants

Have you given up on inverses?

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

666 bro

Member

From: Flatland

Registered: 2019-04-26

Posts: 706

Re: Determinants

no, i understood them clearly, please explain what is determinants ?and for inverse of matrices using row operations please post some questions of finding inverses of 3by3 matrices and i will post answers on matrices thread?

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"An equation for me has no meaning, unless it expresses a thought of God"- Srinivasa ramanujan

Bob

Administrator

Registered: 2010-06-20

Posts: 10,619

Re: Determinants

hi 666bro,

There's a good page on determinants here:

https://www.mathsisfun.com/algebra/matr … inant.html

Do you find the MIF teaching pages useful and easy to understand?  When you meet a new topic I think it's always worth looking there first.

Elementary matrix operations and inverses:

I know you want to practise 3 x 3 matrices but I need to know if you have got the method correct for 2 x 2 first.  That's why I gave you one to try.  When I can see you are good with 2 x 2 I'll be happy to advance to 3 x 3 .

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob