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diff --git a/27/CH5/EX5.2.3/Example_5_2_3.sce b/27/CH5/EX5.2.3/Example_5_2_3.sce
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+clear;
+clc;
+close;
+set(gca(),"auto_clear","off")        //hold on
+
+//Let lambda1<lambda2<0
+
+for x=-20:0.5:20
+    y1 = x;
+    y=0;
+    x1=0;
+    plot2d(x,y1,style=-2)
+    plot2d(x,y,style=-4)
+    plot2d(x1,x,style=-4)
+end
+
+for x=-5:0.5:5
+    y2=-4*x;
+    plot2d(x,y2,style=-2)
+end
+ xtitle('Phase Portrait','x-axis ( x )','y-axis ( y )')
+figure
+function xd=linear523(t,x)
+    xd(1)=-x(1)-x(2);         //x(dot);   x(2) means y.
+    xd(2)=0*x(1)-2*x(2);     //y(dot);   x(1) means x.; 
+  endfunction
+  bound=[-14,-25,14,25];        //Bounds of x-axis and y-axis as [xmin ymin xmax ymax], change them according to your needs.
+  nrect=10;     //increase it to get more number of curves, i.e. more information will be available.
+  set(gca(),"auto_clear","off")        //hold on
+  x=linspace(bound(1),bound(3),nrect);
+  y=linspace(bound(2),bound(4),nrect);
+  x0=[];
+ 
+ for i=1:10
+     x0=[x(i);y(i)];
+     t0=0;
+     t=0:0.01:3000;
+     xout=ode(x0,t0,t,linear523);
+     plot2d(xout(1,:),xout(2,:));
+ end
+  xtitle('Phase Portrait','x-axis ( x )','y-axis ( y )')
+\ No newline at end of file