We got the following circuit:
u_in is input
u_ut is output
The Attempt at a Solution
I assumed that the upper amp has voltage u_in on the positive terminal.
And that the lower amp has voltage 0 V on the positive terminal.
then i calculated u_ut but the ratio then becomes: u_in/u_ut = 0
Because the current from the upper amplifiers output terminal to the output terminal u_ut is
which then gives us
u_ut=u_in -(i*2R) = u_in -u_in
the right answer should be -1