how to obtain square of a signal?

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Vidhya Dharshini
Vidhya Dharshini 2014-2-4
I have the data obtained from a power quality analyzer. It is the value of current and is a row vector.I can generate the current waveform using plot function. Now i want to obtain the square of current for calculating torque.
I want to know whether element wise multiplication is a correct approach for calculating its square.I tried using PS product block in simulink. But it accepts only one value and not a vector.

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