Assume the input resistance of the op amp in Figure 1 is infinite and its output resistanc...

Assume the input resistance of the op amp in Figure 1 is infinite and its output resistance is zero.

a) Find υo as a function of υg and the open-loop gain A.

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b) What is the value of υo if υg = 1V and A = 150?

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c) What is the value of υo if υg = 1V and A = ∞?

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d) How large does A have to be so that υo is 99% of its value in (c)?

Figure 1