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+clear//
+
+//Variables
+
+Av = 1000.0 //Voltage gain
+A1v = 10.0 //Voltage gain with negative feedback
+
+//Calculation
+
+beta = (Av/A1v - 1) / Av //feedback ratio
+
+//Result
+
+printf("\n The fraction of the output that is feedback to the input is %0.3f .",beta)