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diff --git a/296/CH4/EX4.3/eg4_3.sce b/296/CH4/EX4.3/eg4_3.sce
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+n0 = 10^14;
+ni = 1.5*10^10;
+Tn = 2 *10^-6;
+Tp = 2 *10^-6;
+p = 2*10^13;
+p0 = ni^2/n0;
+disp(p0,"hole concentration (per cubic centimeter)=") \ No newline at end of file