Let u and v be unit vectors is r" such that u and v are orthogonal. define p = uu", gq = uu + wt, then (a) (c) p is invertible p is involuntary q is ldempotent

option (c) & (d) If A is involutary => A^2 = I A is idempotent => A^2= A Remember uu' is a rank 1 matrix. detailed solution attached