I can solve basic equations for a variable without setting the LHS
equal to a value:
reset()
var('a b c')
f(a,b,c) = a+b+c
solve(f,a)
a == -b - c
But slightly more complex equations don't seem to work unless I solve
for f==something:
reset()
var('a b c')
f(a,b,c) = a*b*c
solve(f,a)
a == 0
How can I get the analytical solution
a = f/(b*c)
I've tried defining my equation differently so it is a variable not a
function:
reset()
var('f a b c')
f = a*b*c
solve(f,a)
None of these seem to work.
I can add an 'x' to the var list and then this works a bit:
solve(f==x,a)
a == x/(b*c)
And now I can remember to swap x for f, but this seems like a hack. I
tried using 'f' instead of 'x'
solve(f==f,a)
but just get the strange solution
a == r1
I'm new to Sage so I hope there is something obvious I'm missing.
Thanks,
-k.
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