Reconsider the circuit of dealing with the circuit of (a) How is vO affected if VBE1 is 1 mV higher than the value calculated in the example? (b) What if VEB4 is 1 mV higher than the calculated value?...

Reconsider the circuit of dealing with the circuit of (a) How is vO affected if VBE1 is 1 mV higher than the value calculated in the example? (b) What if VEB4 is 1 mV higher than the calculated value? (c) If vi 5 Vim cos t, estimate the maximum value of Vim for which the output is still a relatively undistorted sine wave. Justify any approximations you may be making. (d) What happens if Vim is raised to twice the value found in part (c)? Illustrate by sketching and labeling vO(t).