The expression of Vout=-Vin1+Vin2+Vin3
I apply the virtual short condition
V+=V-
i1=(V+ - Vout)/R
Vout=R*i1 + V+
Vout=(V+ - Vout)+V+
=2V+ - Vout
It seems the voltage divider cannot be applied for V+
How can I find the V+ in this circuit?
I apply the virtual short condition
V+=V-
i1=(V+ - Vout)/R
Vout=R*i1 + V+
Vout=(V+ - Vout)+V+
=2V+ - Vout
It seems the voltage divider cannot be applied for V+
How can I find the V+ in this circuit?
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