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Li Zhinan

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Use the command 'matrix' to define a mat...

Li Zhinan 10 Maple 18
matrix
March 07 2017
2 1

Use the command 'matrix' to define a matrix, and how to call the first row elements of the matrix?

This method

a:=matrix([[1,2,3],[4,5,6],[7,8,9]]);

a[1..2,-2..-1], does not work? Why？

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