On Wednesday, September 16, 2015 at 1:54:40 AM UTC-7, Mandeep Singh wrote:
>
> Can we declare lambda as a variable? I want to use it in eigenvalues
> (linear algebra).
> like:
> l = var("lambda");
> It'll give error. So how can I declare it as a variable.
>
This works. I don't know if it will keep working:
sage: l=SR.symbol('lambda')
sage: l
lambda
sage: l^2+l+1
lambda^2 + lambda + 1
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