Problem

What are the dimensions of the matrix A=[123456789]?

Answer

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Answer

Count the number of columns: In matrix A, there are 3 columns.

Steps

Step 1 ：A matrix's dimensions are given by the number of rows and the number of columns, respectively.

Step 2 ：Count the number of rows: In matrix A, there are 3 rows.

Step 3 ：Count the number of columns: In matrix A, there are 3 columns.

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