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diff --git a/2414/CH5/EX5.7/Ex5_7.sce b/2414/CH5/EX5.7/Ex5_7.sce
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+clc;
+clear all;
+//page no 158
+//prob no. 5.7
+
+fLO=40;    //MHz
+//function for ascending pulse
+function V=pulse_a()
+    V=[]
+    for i=1:.005:2
+        V=[V i]
+    end
+endfunction
+//function for descending pulse
+function V=pulse_d()
+    V=[]
+    for i=2:-.005:1
+        V=[V i]
+    end
+endfunction
+
+//for V2(f)
+f=[0:.01:48+.01];   //x axis
+
+V2=[zeros(0:.01:-8+fLO-.01) pulse_d() zeros(-6+fLO+.01:.01:6+fLO-.01) pulse_a() 0];      //y axis
+clf;
+subplot(211);
+plot2d(f,V2,[5],rect=[0,0,50,2])
+xtitle('Spectral diagram','f,MHz','V2(f)');
+
+//for V3(f)
+f=[0:.01:48+.01];   //x axis
+
+V3=[zeros(0:.01:6+fLO-.01) pulse_a() 0];      //y axis
+subplot(212);
+plot2d(f,V3,[5],rect=[0,0,50,2])
+xtitle('Spectral Diagram','f,MHz','V3(f)');