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diff --git a/876/CH4/EX4.9/Ex4_9.sce b/876/CH4/EX4.9/Ex4_9.sce
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+//caption:Find equivalent parallel resistance and capacitance.
+//Ex4.9
+clc
+clear
+close
+R1=3.1//resistance(in kilo ohm)
+R2=25//resistance(in kilo ohm)
+C1=5.2*10^-6//capacitance(in F)
+R4=100//resistance(in kilo ohm)
+f=2500//frequency (in Hz)
+w=2*%pi*f
+R3=(R4/R2)*((R1)+1/(w^2)*R1*(C1^2))
+disp(R3,'equivalent parallel resistance(in kilo ohm)=')
+C3=1/((w^2)*C1*R1*R3)
+disp(C3,'equivalent parallel capacitance(in F)=')
+\ No newline at end of file