M is a subset of R^n. M* is a set of vectors which are perpendicular to M (ie each element of M* is perpendicular to each element of M).

Firstly: Show that M* is a subspace of R^n

Secondly : In R^3, find M* where M = {2i-j+2k,i-2j-2k}

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- May 6th 2008, 10:49 PMflawlessSubsets and subspaces, perpendicular sets!
M is a subset of R^n. M* is a set of vectors which are perpendicular to M (ie each element of M* is perpendicular to each element of M).

Firstly: Show that M* is a subspace of R^n

Secondly : In R^3, find M* where M = {2i-j+2k,i-2j-2k} - May 6th 2008, 11:51 PMIsomorphism