I'm just looking to verify something

From a mathematical point of view:

Gain = -gm*Rc

gm = Ic1/Vt

Rc = 8k

When Vo = +15

AV = -((15/8*10^3)/25*10-3) * 8*10^3

= -600

When Vo = -10

AV = ((10/8*10^3)/25*10-3) * 8*10^3

= 400

Is this correct?

note to mods:

I posted this thread here: http://forum.allaboutcircuits.com/showthread.php?t=63201 however I think it belongs in Homework help.

If you could delete/merge the other one that would be great.