public void CombineTest3()
{
double[] a1 = new double[] { 1, 2 };
double[] a2 = new double[] { 3, 4, 5 };
double[] expected = new double[] { 1, 2, 3, 4, 5 };
double[] actual = Matrix.Concatenate(a1, a2);
Assert.IsTrue(Matrix.IsEqual(expected, actual));
}