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<HTML><HEAD><TITLE>Newmat09 - matrix and scalar</TITLE></HEAD><BODY><H2>Matrix and scalar</H2><A HREF="scalar.html"> next</A> - <A HREF="scalar.html"> skip</A> - <A HREF="refer.html"> up</A> - <A HREF="index.html"> start</A><P>The following expressions multiply the elements of a matrix <TT>A</TT> by ascalar f: <TT>A * f</TT> or <TT>f * A</TT> .Likewise one can divide the elements of a matrix<TT>A</TT> by a scalar f: <TT>A / f</TT><P>The expressions <TT>A + f</TT> and <TT>A - f</TT> add or subtract arectangular matrix of the same dimension as <TT>A</TT> with elements equal to<TT>f</TT> to or from the matrix <TT>A</TT>.<P>The expression <TT>f + A</TT> is an alternative to <TT>A + f</TT>.The expression <TT>f - A</TT> subtracts matrix <TT>A</TT> from a rectangularmatrix of the same dimension as <TT>A</TT> and with elements equal to<TT>f</TT><P>The expression <TT>A += f</TT> replaces <TT>A</TT> by <TT>A + f</TT>.Operators<TT>-=</TT>, <TT>*=</TT>, <TT>/=</TT> are similarly defined.</BODY></HTML>⌨️ 快捷键说明
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