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Simultaneous equations

2008-04-24 by renystro

I am trying to solve three simultaneous equations and I can't seem to
figure out how to do it. I've gone through the manual and keep
getting an error trying to use msolv

I have
M1=p*0^2+q*0+r
M2=p*(L/2)^2+q*(L/2)+r
M3=p*L^2+q*L+r

The answers are p=-3 q=102 and r=-578

Can anyone give me the syntax to get this from a 50g?

I've also tried entering them as vectors and then using solve but it
only gave me the trivial solution (0 0 0)

Thank you.

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