6. Give an orthonormal basis for n u l l ( T ) , where T L (
6. Give an orthonormal basis for n u l l ( T ) , where T L ( C 4 ) is the map with canonical matrix 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 6. Let V be a nite-dimensional inner product space over F , a