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here it is!!!!

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Guitarist Pandey
Guitarist Pandey 2017-2-10
关闭： MATLAB Answer Bot 2021-8-20
Write a function named custom_blocks that takes an n-by-m matrix as an input argument (the function does not have to check the format of the input) and returns a 2n-by-2m matrix as an output argument. The upper left n-by-m sub matrix of the output matrix is the same as the input matrix. The elements of the upper right n-by-m sub matrix are twice as large as the corresponding elements of the input matrix. Similarly, the lower left submatrix is the input matrix multiplied by three and the lower right n-by-m submatrix is four times the input matrix.
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James Tursa
James Tursa 2017-2-10
What have you done so far? Please post your current code and ask specific questions about it and we can help.

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