public void TestUncertaintyMultiplyConstant()
        {
            var u1 = new Uncertainty(7, 0.2, 0.7);
            var u2 = u1.Multiply(3);

            Assert.AreEqual(u2, u1 * 3);
            Assert.AreEqual(u2, 3 * u1);
            Assert.AreEqual(21, u2.Value);
            Assert.AreEqual(0.6, u2.LowerUncertainty, 0.00001);
            Assert.AreEqual(2.1, u2.UpperUncertainty, 0.00001);
            Assert.IsFalse(u2.IsRelative);
        }
        public void TestUncertaintyMultiply()
        {
            var u1 = new Uncertainty(5, 0.5, 1.0);
            var u2 = new Uncertainty(2.2, 0.1, 0.1);
            var u3 = u1.Multiply(u2);

            Assert.AreEqual(u3, u1 * u2);
            Assert.AreEqual(11, u3.Value);
            Assert.AreEqual(1.6, u3.LowerUncertainty, 0.00001);
            Assert.AreEqual(2.7, u3.UpperUncertainty, 0.00001);
            Assert.IsTrue(u3.IsRelative);
        }