Integration with Symbolic packages

[djsegal]

Currently calling lambdify on a symbolic expression does not work as nicely as explicitly defining a function

I believe this is why I got the following error:

DomainError:
log will only return a complex result if called with a complex argument. Try log(complex(x)).

From,

• https://discourse.julialang.org/t/way-to-find-positive-roots-by-treating-complex-numbers-as-negatives-symengine-roots/11688/10?u=djsegal

[djsegal]

I don't know what caused the domain error. But it wasn't lambdify :(