Consider an mtimesn matrix A. Which of the subspaces Row Upper A, Co l Upper A, Nu l Upper A, Row Upper A Superscript Upper T, Co l Upper A Superscript Upper T, and Nu l Upper A Superscript Upper T are in set of real numbers R Superscript m and which are in set of real numbers R Superscript n? How many distinct subspaces are in this list? Select each subspace that is in set of real numbers R Superscript m.
