Function rt

test/compute-engine/rubi-utils.test.ts:187–188

(u: Json, n: number)

  test('fails on pure x²/(a+b·x⁴) as well', () => {
    const j: Json = [
      'Divide',
      ['Power', 'x', 2],
      ['Add', 'a', ['Multiply', 'b', ['Power', 'x', 4]]],
    ];
    expect(() => build(['ExpandIntegrand', j, 'x'], ctx)).toThrow(RuleFail);