On Tuesday 13 of July 2010 10:33:16 Mein Linuxrechner Arbeit wrote:
> Hello,
> I tried to replase a in eq11 by the expression on the right side of "=".
> [a=-(w2-w1)/(2*d*p-2*d*m-d^2)]
> Bit instead of doing that, s is simply replaced by a.
> How can I make maxima do what I want?
>
> Thanks in advance
>
>
> (%i1) eq10: w1-w2=-a*(p-d-m)^2 + a*(p-m)^2;
>
>
> (%i2) eq11: w3-w1=-s*(p+d-m)^2 + s*(p-m)^2;
>
>
> (%i3) linsolve(eq10,[a]);
>
>
> (%i4) eq11: subst(a,s,eq11);
Ops, it should be:
r: linsolve(eq10,[a]);
subst(rhs(r), s ,eq11);
Zbigniew