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AsQuotient​(AngouriMath.​Entity,​AngouriMath.​Entity.​Variable,​AngouriMath.​Entity,​AngouriMath.​Core.​ApproachFrom)

 Method (no overloads)

Summary

The expression rewritten as a single quotient, or null where it is
not one to begin with and nothing is gained by writing it as one. The rule below only
reads quotients, and two kinds of expression are quotients without being written as
one.
A product with a reciprocal factor: lim x -> +oo x^4 * e^(-x) came out as
NaN while the same limit written x^4 / e^x gave 0 --
https://github.com/asc-community/AngouriMath/issues/596.
And a sum of them, which is where the differences of two divergent parts at a finite
point live: 1/x - 1/sin(x) at 0 is +oo - +oo on the right and -oo - -oo on the
left, and nothing in the descent takes a difference apart any further than asking
what each half tends to. Over the common denominator it is
(sin(x) - x) / (x * sin(x)), which is 0/0 and which the rule settles at 0 in
three steps.

























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