How to find the null space of a matrix on Ti-89 calculator?

I couldn't find the command to find the null space of a matrix on Ti-89 calculator. Does anyone know how to do it? Thanks. 

ted s2020-07-22T22:25:06Z

Favorite Answer

do an 'rref' on the matrix after augmenting with a column of zeros...after all the null space is a  set of vectors that are mapped to the zero vector

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