Function lin

test/compute-engine/arithmetic.test.ts:1946–1951

(c: number[])

        .expr(['Product', ['Add', 3, 'k'], ['Limits', 'k', 0, 3]])
        .evaluate()
        ?.toString()
    ).toMatchInlineSnapshot(`360`);
  });

  // Falling factorial
  it('should simplify falling factorial', () => {
    expect(
      ce
        .expr([