Function genBinomialMatchQ

src/compute-engine/rubi/rubi-utils.ts:2210–2213

(u: Expression, x: string)

  const split = splitMonoFactor(u, x);
  if (split === null) return null;
  const { scale, exp: mExp, rest } = split;
  if (rest === null) return null;
  const gp = genBinomialPartsX(rest, x);
  if (gp !== null) {
    const n = mExp.add(gp.n).evaluate();
    const q = mExp.add(gp.q).evaluate();
    if (zeroQ(n) || zeroQ(q)) return null;