The derivative of a product : (f*g)' = f'*g + g'*f
@mathclub26 complex conjugate f' times g plus f complex conjugate g' B-) .. I'm done here
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The derivative of a product : (f*g)' = f'*g + g'*f
@mathclub26 complex conjugate f' times g plus f complex conjugate g' B-) .. I'm done here