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## #1 2013-06-20 20:32:24

niharika_kumar
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### matrix

i am completely unknown to matrix as it has not yet come in my syllabus.But i saw this question somewhere and hence wanted to know the solution.please help me in an easy way so that i get it clearly.
the question is
{2-45d-2=4},we have to find the value of "d".

Last edited by niharika_kumar (2013-06-20 20:33:25)

*You are never as good as people tell you when you win and you are never as bad as they tell you when you lose.

*Everything happens for a reason,even if we are not wise enough to see them....oprah winfrey

## #2 2013-06-20 20:44:32

bobbym

Online

### Re: matrix

Hi niharika_kumar;

That is a linear equation with set brackets around it. Could be a vector, a list, a set or just a linear equation.

The equation is easy to solve

Is that what you want? Where is the matrix? Please do not say it is all around me... Somebody already got me with that line today.

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

## #3 2013-06-20 21:58:15

bob bundy
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### Re: matrix

Maybe it really is a matrix such as

or

Then make det(M) = 4

niharika_kumar:  Welcome to the forum.

If the above is the sort of thiong you meant, you'll have to make it clear what numbers go where.

Bob

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

## #4 2013-06-20 22:01:51

bobbym

Online

### Re: matrix

Accuracy, Accuracy and Accuracy - Joseph Pulitzer

Applies to math even more.

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

## #5 2013-06-21 19:51:17

niharika_kumar
Power Member

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### Re: matrix

#### bobbym wrote:

Hi niharika_kumar;

That is a linear equation with set brackets around it. Could be a vector, a list, a set or just a linear equation.

The equation is easy to solve

Is that what you want? Where is the matrix? Please do not say it is all around me... Somebody already got me with that line today.

some1 asked me this ques. in a chtrm and i replied the same but then he told me that we have to solve it by using matrix(of which i am totally unaware) and he told me that the answer was 6.

*You are never as good as people tell you when you win and you are never as bad as they tell you when you lose.

*Everything happens for a reason,even if we are not wise enough to see them....oprah winfrey

## #6 2013-06-21 19:53:09

bobbym

Online

### Re: matrix

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

## #7 2013-06-21 20:14:05

niharika_kumar
Power Member

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### Re: matrix

it was a chtrm so after that i didnt meet him.
its ok. he also seemed to be half confused.

*You are never as good as people tell you when you win and you are never as bad as they tell you when you lose.

*Everything happens for a reason,even if we are not wise enough to see them....oprah winfrey

## #8 2013-06-21 20:17:21

bobbym

Online

### Re: matrix

His notation is unexplainable. I do not know what to do with it.

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

## #9 2013-06-21 20:40:58

{7/3}
Full Member

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### Re: matrix

If you mean the matrix bob wrote about,the you have to find d so that det(M)=4,if you mean a linear equation it can be solved like a system of linear equation (but the method would be dull).

There are 10 kinds of people in the world,people who understand binary and people who don't.

## #10 2013-06-21 20:53:49

{7/3}
Full Member

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### Re: matrix

If you want to know about matrix try this-http://www.mathsisfun.com/algebra/matri … ction.html

There are 10 kinds of people in the world,people who understand binary and people who don't.

## #11 2013-06-22 01:32:08

niharika_kumar
Power Member

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### Re: matrix

thnx friends for ur wonderful support!
hope i would meet that guy again and clear this ques!

*You are never as good as people tell you when you win and you are never as bad as they tell you when you lose.

*Everything happens for a reason,even if we are not wise enough to see them....oprah winfrey