I was working on question 2.23(a) and there is asked what input voltage is needed in order to ensure that the output does not clip. The clipping limits are +10 to -10 V.
I solved that, and, basically, what I did was that first I nulled the input voltage and found the output voltage due to the offset voltage source connected to the positive terminal of the opamp and then I nulled the offset source and found the contribution of the input voltage to the output voltage (superposition) and then I added the two (output voltage contributions) and put them equal to 10, which is the saturation voltage for the opamp.
However, my answer to question 2.23 is not correct. So I wanted to ask: if I am not doing it correctly, how do I do it then? Here is the circuit I used: