Question: Using Python, plot f ( z ) = cos ( z ) - beta sinz / z for beta = 5 . Let

Using Python, plot f(z)=cos(z)-\beta sinz/z
for \beta =5. Let z run from 0 to 5\pi with a total number of 1000 data points. Determine the range of energies of the first, second, and third band gaps up to three decimal places. For the sake of argument, assume \alpha /a=1. Please show code.

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