Re: Working with arrays
- To: mathgroup at smc.vnet.net
- Subject: [mg131241] Re: Working with arrays
- From: collabe <collabe2013 at gmail.com>
- Date: Thu, 20 Jun 2013 04:46:32 -0400 (EDT)
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- Delivered-to: l-mathgroup@wolfram.com
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If A = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
xtest = {4, 5, 6};
lA\[CenterDot]xtest (* First case *)
{{a, b}, {c, d}} . {x, y} (* Second case *)
The output is:
{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}\[CenterDot]{4, 5, 6}
{a x + b y, c x + d y}