Consider an ideal inverting omp-amp, but with the feedback resistance replaced with a diode that follows the diode equation (I≈Iscexp(qV/kbT)) The anode of the diode is connected to the inverting node of the op-amp, while its cathode is connected to the output of the op-amp. Determine the expression of the output node potential as a function of the input node potential. What is the use of this circuit.