13 Replies Latest reply: Nov 27, 2011 11:29 AM by lvl107

# Matrix Number and Solving Equation 3.

Hello Everyone,

I have a question, wish learning and really need help. It's about "Matrices and Solving Equation"(3).

Thanks in advance for the time and help.

Best regards,

Loi Le.

• ###### Re: Matrix Number and Solving Equation 3.

X=0

See the attach

• ###### Re: Matrix Number and Solving Equation 3.

Many thanks for your response, Valery. I think I am new with matrix multiplication. My question should be :

Thanks again,

Loi Le.

• ###### Re: Matrix Number and Solving Equation 3.

Hello again,

My question above should be :

• ###### Re: Matrix Number and Solving Equation 3.

Loi Le wrote:

Hello again,

My question above should be :

I think - no symbolic solution

• ###### Re: Matrix Number and Solving Equation 3.

Hello!

• ###### Re: Matrix Number and Solving Equation 3.

OK!

I tried to find a symbolic solution.

And why MinErr not Find? Find is OK too!

• ###### Re: Matrix Number and Solving Equation 3.

And of course you can also use the function "Find" too:

• ###### Re: Matrix Number and Solving Equation 3.

I greatly appreciate your answer to my question, VladimirN. And I still have a query and need a explanation ( only for the last line ).

Regards,

Loi Le.

• ###### Re: Matrix Number and Solving Equation 3.

I greatly appreciate your answer to my question, VladimirN. And I still have a query and need a explanation ( only for the last line ).

Regards,

Loi Le.

• ###### Re: Matrix Number and Solving Equation 3.

Loi,

And simple example (returns "1" if "x=y", and "0" otherwise):

P.S. And in your case, equation to be solved must be defined using Boolean equals ("=", hotkeys "Ctrl"+"=").

• ###### Re: Matrix Number and Solving Equation 3.

I was wondering about "How many solutions the problem could have ?"

Regards,

Loi Le.

• ###### Re: Matrix Number and Solving Equation 3.

Another example has at least two solutions :

Regards,

Loi Le.

• ###### Re: Matrix Number and Solving Equation 3.

Now I got it, VladimirN. ( with following example )

Thanks again,

Best regards,

Loi Le.