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householder — Householder orthogonal reflexion matrix
u=householder(v [,w])
| v | : real or complex column vector |
| w | : real or complex column vector with same size as v. Default value is eye(v) |
| u | : real or complex column vector |
given 2 column vectors v, w of same size, householder(v,w) returns a unitary column vector u, such that (eye()-2*u*u')*v is proportional to w. (eye()-2*u*u') is the orthogonal Householder reflexion matrix .
w default value is eye(v). In this case vector (eye()-2*u*u')*v is the vector eye(v)*norm(v).
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