1.2. for vectors x = (1; 2i; 1 + i)t and y = (i; 2 i; 3)t compute
a) (x; y), kxk2, kyk 2, kyk;
b) (3x; 2iy), (2x; ix + 2y);
c) kx + 2yk. remark: after you have done part
a), you can do parts
b) and
c) without actually computing all vectors involved, just by using the properties of inner product.