Question: how can solve the same list of equations but with the change of value of a variable

Good afternoon.

I have a problem.

I want to evaluate that equations

> aux1 := tau1-c11*x2q1(t)-c12*x2q2(t)-c13*x2q3(t)-g1-fric1;
> aux2 := tau2-c21*x2q1(t)-c22*x2q2(t)-c23*x2q3(t)-g2-fric2;
> aux3 := tau3-c31*x2q1(t)-c32*x2q2(t)-c33*x2q3(t)-g3-fric3;
when the variable fric1, fric2 and fric3 are cero and other values.
I like to watch the result in the same plot.
I am using Ode.
i send my file
19-05-2011-robot-man.mw

 thank you for helping me 

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