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+close();
+clear;
+clc;
+k = 1.38*10^(-23);
+T = 25+273; //K
+q = 1.6*10^(-19);
+Vt = k*T/q;
+//error will be less than 1 % if
+//e^(vd/Vt) > 101
+vd = Vt*log(101);
+mprintf("(7.1) can be approximated as id*Io*e^(vd/Vt) for vd > %0.4f V",vd); \ No newline at end of file