I was looking at the question "what feedback exactly means"(applied in Op-amps). In the negative feedback even though there is a decrease in the op-amps overall gain, it's widely used because it improves the frequency response of the operational amplifier. So what does this mean exactly?
Negative feedback decreases the gain at low frequencies but does not affect it much at high frequencies. The frequency range over which the gain is almost constant is increased. Compare the -3dB points of the two amplifier circuits below: