Function ints

src/compute-engine/rubi/rubi-utils.ts:761–763

(k: number)

    }
    if (v.operator === 'Power' && v.ops && v.ops[0].symbol === ctx.x) {
      const k = realNum(v.ops[1]);
      if (k === null || !Number.isInteger(k) || k < 1) return false;
      const coeffs = polyCoeffsX(u, ctx.x);
      if (coeffs === null) return false;
      if (!coeffs.every((c, i) => i % k === 0 || c.isSame(0) || zeroQ(c)))
        return false;