Consider the inverting configuration with R$,=1$ ks$?$ and R$,=100$ k$,$ that is$,$ having an ideal closed$-$loopgain of $-100.($a$)$ Find the closed$-$loop gain for the cases A $=10\text{'},10*,$ and $10\backslash$deg $.$ In each case determine the percentage error in the magnitude of G relative to the ideal value of R$,/$R$,($obtained with A $=).$ Also determinethe voltage v$,$ that appears at the inverting input terminal when u$,=0\mathrm{.}1$ V$.($b$)$ If the open$-$loop gain A changes from $100,000$ to $50,000($i$.$e$.,$ drops by $50\%),$ what is the corresponding percentage change in the magnitude of the closed$-$loop gain G$?$