assertTrue(a.getComplex(0).equals(new Complex(-9, 38)));
assertTrue(a.getComplex(1).equals(new Complex(3, 4)));
assertTrue(a.getComplex(2).equals(new Complex(5, 6)));
// testing multiply(int, int, double, double)
a.multiply(0, 1, 1.5, -4.75);
assertTrue(a.getComplex(0).equals(new Complex(23.5, -8.25)));
assertTrue(a.getComplex(1).equals(new Complex(3, 4)));
assertTrue(a.getComplex(2).equals(new Complex(5, 6)));
// testing multiply(int, double, double, double, double)