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diff --git a/1691/CH4/EX4.2/Exmp4_2.sce b/1691/CH4/EX4.2/Exmp4_2.sce
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+//Example 4.2
+clc
+ft=25*2
+format(3)
+disp(ft,"(i) f_T(in MHz) = |A_i|*f =")
+hfe=50000/200
+format(4)
+disp(hfe,"(ii) h_fe(in kHz) = f_T / f_beta =")
+disp("(iii) |A_i| = h_fe / sqrt(1+((f/f_beta)^2)) =")
+disp("At  f = 10 MHz")
+ai=250/sqrt(1+(((10*10^6)/(200*10^3))^2))
+format(2)
+disp(ai,"|A_i| =")
+disp("At  f = 100 MHz")
+ai=250/sqrt(1+(((100*10^6)/(200*10^3))^2))
+format(4)
+disp(ai,"|A_i| =")