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diff --git a/876/CH8/EX8.7/Ex8_7t.txt b/876/CH8/EX8.7/Ex8_7t.txt
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+//caption:Find peak amplitude and frequency of the signal
+//Ex8.7
+clc
+clear
+close
+V=0.5//vertical attenuator(in V/division)
+Vo=10^-6//horizontal attenuator(in second/division)
+n=6//number of divisions on vertical axis
+N=5//number of division for complete one cycle
+V1=V*n
+Vp=V1/2
+disp(Vp,'peak amplitude(in V)=')
+T=Vo*N
+f=1/T
+disp(f,'frequency of the signal(in Hz)=')
+\ No newline at end of file