Here we see the output of an inverting amplifier. The input is the top signal, the output is the bottom signal. Notice that the signal will look the same. As the input moves up, the output moves down and so on. You'll notice that at some point we hit the rails of the operational amplifier. We hit the negative rail or the positive rail. If we increase the amplitude, the same thing happens. We'll eventually hit both rails. The output is the top signal.