` running in the notebook ( Sage 5.1 )
--- this input ---
var( "Z", "A" )
equ = 1.*Z/A^(1/3) + 2.*(A - 2*Z)/A == 0
print equ
sol = solve( equ, A )
print sol
--- gives ---
Z/A^(1/3) - 2*(-A + 2.00000000000000*Z)/A == 0
[
A == -2*(A^(4/3) - 2*A^(1/3)*Z)/Z
]
--- my problem ---
if I have solved for A, why is A still on the RHS, I expected only Z as a variable. This problems is similar to the real one I am having with a much more complicated formula. `