I looked over the web for an answer for this question, but everybody tells that if you don't that your op amp will not work, So I will rephrase my question here: why the op amp will not work if you don't provide a path for input bias current.
I found an answer that refers the reason to coupling capacitor on the power supply of op amp, where the input bias current will full charge it(at least that what I understood) but assume that you have a signal : A + sin(t), then I expect that the DC part (A) will full charge any capacitor that pass it, which is not make sense.
I found an answer that refers the reason to coupling capacitor on the power supply of op amp, where the input bias current will full charge it(at least that what I understood) but assume that you have a signal : A + sin(t), then I expect that the DC part (A) will full charge any capacitor that pass it, which is not make sense.