v2.addProduct(sv, vs,2.0);
assertEquals(Vector.of(0,3,0,18,0,0,54,0,0,0),v2);
AVector v3=Vectorz.newVector(20).subVector(5, 10);
v3.subVector(5,5).addProduct(sv,1, vs,1,1.0);
assertEquals(Vector.of(0,0,0,0,0,1,0,6,0,0),v3);
v3.subVector(5,5).addProduct(sv,1, vs,1,2.0);
assertEquals(Vector.of(0,0,0,0,0,3,0,18,0,0),v3);