Question: Write a MATLAB function that returns a square wave ( a waveform that switches between +1 and -1) with a specified period in samples and

Write a MATLAB function that returns a square wave ( a waveform that switches between +1 and -1) with a specified period in samples and specified length in samples. (One period is the total number of samples the waveform is at + 1 and then -1 before starting over.) Assume that there are an equal number of positive and negative samples in each period. Show code and results.

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