document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1179469>Question 1179469</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two matrices can be multiplied only if their sizes are compatible. Suppose that U is an m × n matrix, and the V is a p × q matrix. In order for the matrix product UV to make sense, what must be true about the dimensions of these matrices? </SPAN>\n" );
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document.write( "n=p<br><BR>\n" );
document.write( "Basic matrix rules.<br><BR>\n" );
document.write( "The number of entries in each row of U (i.e., the number of columns in U), which is n, must be the same as the number of entries in each column of V (i.e., the number of rows in V), which is p.<br><BR>\n" );
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