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analyze the op amp （assuming ideal) circuit shown below, find the voltage gain

Analyze the op amp (assuming ideal) circuit shown below, find the voltage gain analyze the op amp （assuming ideal) circuit shown = . and input resistance= .

A、-7.5, 20kΩ

B、-5, 10kΩ

C、-15, 10kΩ

D、-8, 15kΩ

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