50g

By the way, when entering matrices and vectors using square brackets 
instead of the matrix writer, commas are kind of inconvenient and messy 
looking.  In RPN mode you can just use spaces between numbers.  
Example: [[1 2 -5][2 1 7][4 4 0]] is a square matrix with rows 1,2,-5 
etc. [[3][-1][5]] or simply [3 -1 5] works like a column vector.  Use 
double brackets for a row vector: [[1 -5 32]].  You can't do it this 
way in Algebraic mode as it would interpret juxtaposition as 
multiplication.

Richard in NC