Problem 예제.

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그림과 같은 피드백 회로의 종합 전달 함수는?

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1

G1G21+G1G2+G3G4\dfrac{G_1G_2}{1+G_1G_2+G_3G_4}

2

G1G21+G4G2+G3G1\dfrac{G_1G_2}{1+G_4G_2+G_3G_1}

3

G1+G21+G1G3G4+G2G3G4\dfrac{G_1+G_2}{1+G_1G_3G_4+G_2G_3G_4}

4

G1+G21+G1G2G3G4\dfrac{G_1+G_2}{1+G_1G_2G_3G_4}

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