simplifying expression

[ptc-6727461]

Hi. I have the problem presented in the attachement. I need to replace the value of the determinant of the second expression with B, to make it simpler. I've tried with "explicit, B" but it doesen't work. How do i do that? Thank you

[LucMeekes]

Can't see your file at the moment but the mathematical term for replacement is substitution. Mathcad has that built in. Use the 'substitute' symbolic keyword with argument {determinant}=B.

Success!
Luc

[Werner_E · Accepted solution]

Here is the whole content of his file:

He has alreaday asked the same question here: http://communities.ptc.com/message/261653#261653

For reasons unknown to us he wants Mathcad to display something like

which I guess is demanding too much.

[LucMeekes]

It is possible, if you tell Mathcad what you want it to give you. With:

[Werner_E]

LucMeekes wrote:

It is possible, if you tell Mathcad what you want it to give you. With:

Yes, thats basically the way I did it in the file I posted. Not sure if it had helped.

[ptc-6727461]

Ok. I understood so the first thing i want to know is how do I insert that bold equal sign. Sorry but i'm a dummy

[Werner_E]

Labont Pavel-Cristian wrote:

Ok. I understood so the first thing i want to know is how do I insert that bold equal sign. Sorry but i'm a dummy

This boolean equal sign is accessible from at least two palettes ("calculator" and "boolean"). I usually use the keyboard shortcut Ctrl & +, but this may be different, depending on the keyboard layout you use - I am using a keyboard with German layout.

[ptc-6727461]

Thank you very much.