How to multiply two matrices without numeric values

[grar]

I need to multiply a couple of matrices that don't have numeric values
e.g: A has a1 a2 on line one and a3 a4 on line two
B has b1 b2 on line one and b3 b4 on line two
values are rotation angles but there is no specified value
how can i do this using mathcad 13?

 

[IRstuff]

Is this for school? If you have no numeric values, then you should be using the symbolic processor.

TTFN

FAQ731-376

 

[Occupant]

You could do it like this:

(a1 a2) (b1 b2)
* -->
(a3 a4) (b3 b4)

obviously written Mathcad style.