Hi Geir,
If you really want to use strings, it may work like that:
sage: var('x y')
(x, y)
sage: EqL=['y==x**%d-%d'%(i,i) for i in range(10)]
sage: for X in EqL:
....: print X
....: print solve(eval(X))
....:
y==x**0-0
[
y == 1
]
y==x**1-1
[
x == y + 1
]
y==x**2-2
[
x == - sqrt(y + 2),
x == sqrt(y + 2)
]
etc...
Note that double-= yields an equation (not a boolean!) if symbolic
expressions such as x and y are involved. A single "=" is an
assignment.
Cheers
Simon
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