Matrix Number and Solving Equation 3.

[lvl107]

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.

[ValeryOchkov]

X=0

See the attach

[lvl107]

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

Thanks again,

Loi Le.

[lvl107]

Hello again,

My question above should be :

[ValeryOchkov]

Loi Le wrote:

Hello again,

My question above should be :

I think - no symbolic solution

[VladimirN · Accepted solution]

Hello!

Please see the attachment (files for versions of Mathcad 12, 15).

[ValeryOchkov]

OK!

I tried to find a symbolic solution.

And why MinErr not Find? Find is OK too!

[VladimirN]

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

[lvl107]

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.

[lvl107]

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.

[VladimirN]

Loi,

Please see the explanation from Mathcad Help (hotkey "F1"):

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"+"=").

[lvl107]

VladimirN,

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

Thanks for your help again.

Regards,

Loi Le.

[lvl107]

Another example has at least two solutions :

Regards,

Loi Le.

[lvl107]

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

Thanks again,

Best regards,

Loi Le.