What is the difference between A.*sin(2*pi*f*t) and A*sin(2*pi*f*t) dotless multiplie

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Murat Aydemir
Murat Aydemir 2015-10-6
编辑： Image Analyst 2015-10-6
Hi guys
Currently I'm investigating some code about ASK, PSK and FSK.
I saw code like this ".*" (dot and multiplication symbol). My question is this:
Assume A is a scalar. Then, are
Xc=A.*sin(2*pi*fc*t) and
Xc=A*sin(2*pi*fc*t)
the same thing? If not somebody please explain to me the difference(s) between them.
Regards

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回答（1 个）

Image Analyst
Image Analyst 2015-10-6
There is no difference in Xc if A is a scalar.

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