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diff --git a/3673/CH2/EX2.a.1/Example_a_2_1.sce b/3673/CH2/EX2.a.1/Example_a_2_1.sce
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index 000000000..e858d50d1
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+++ b/3673/CH2/EX2.a.1/Example_a_2_1.sce
@@ -0,0 +1,29 @@
+//Example 2_1 page no:85
+clc;
+delta=[3,-1,-1,
+        -1,3,-1,
+        -1,-1,3];
+delta1=[10,-1,-1,
+        5,3,-1,
+        5,-1,3];
+delta2=[3,10,-1,
+        -1,5,-1,
+        -1,5,3];
+delta3=[3,-1,10,
+        -1,3,5,
+        -1,-1,5];
+ia=det(delta1)/det(delta);
+ib=det(delta2)/det(delta);
+ic=det(delta3)/det(delta);
+I=ia;
+I1=ia-ib;
+I2=ib;
+I3=ib-ic;
+I4=ic;
+I5=ia-ic;
+disp(I,"the branch current I is (in A)");
+disp(I1,"the branch current I1 is (in A)");
+disp(I2,"the branch current I2 is (in A)");
+disp(I3,"the branch current I3 is (in A)");
+disp(I4,"the branch current I4 is (in A)");
+disp(I5,"the branch current I5 is (in A)");