Signal at output using transfer characteristic

[mishima]

Homework Statement

Find the output signal for an amplifier with transfer characteristic:
vO = 10-10^-11e^40*vi
output bias of 5V
input bias of 0.673 V
and an input signal of 1 mV superimposed on the bias

Homework Equations

vO = bias out + signal out
vI = bias in + signal in

The Attempt at a Solution

I plug in .673+0.001=0.674 for vi (signal in) and get 4.888 for vO. I then take 4.888-5= -0.112 V for signal out. Book answer is -.204 V...

 

[NascentOxygen]

Did you check to determine what output the amplifier's equation gives for input of 0.67300 volts?

 

[mishima]

Thank you, I needed to include more digits when solving for the input bias.