solve, Matrix [3x3] ?

[lvl107]

Hi, Everyone.
From the following:

The question is: How to find the solution [ A B C ] ?
Thanks in advance for your time and help.
Best Regards.
Loi.

[LucMeekes]

Using Mathcad 11, with:

Then:

And if you select the fourth solution with the proper value of C:

Then A, B and C have the values you specify, as demonstrated by:

And of course, with those A,B, and C:

Success!
Luc

P.S. In Prime 8:

[lvl107]

With my MathCad 15 then:

I guess your MC11 engine is better than my MC15 engine in this case, Luc.

Without MC11, I spent a lot of time to find that solution.😅

I still have a query: And are there any solution else ?

Best Regards.
Loi.

[lvl107]

I still have a query: And are there any solution else ?

[Werner_E]

---

@lvl107 wrote:

I still have a query: And are there any solution else ?

---

Look at my reply below!

For every argument you feed into the function "Sol" you get 7 different solutions. So you now have access to 7 times infinity solutions. Is that enough or is it still too few?

[Werner_E · Accepted solution]

You already asked a very similar question here

https://community.ptc.com/t5/Mathcad/Solve-Matrix-3x3/m-p/830108/highlight/true#M203184

and the solution was quite the same as here. You did not close that thread.

Add "fully" and "simplify", use _z for the free parameter  and it works

[lvl107]

You're right. I forgot add more "simplify":

Best Regards.