fricas 1/sqrt(x^2 + 1) - sqrt(x^2 + 1)/(x^2 + 1)
Type: Expression(Integer)
fricas limit(1/sqrt(x^2 + 1),
Type: Union(Record(leftHandLimit: Union(OrderedCompletion?(Expression(Complex(Integer))),
fricas limit(sqrt(x^2 + 1)/(x^2 + 1),
Type: Union("failed",
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