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diff --git a/964/CH31/EX31.1/31_1.sce b/964/CH31/EX31.1/31_1.sce
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+clc;
+clear;
+//d2T/dx2=-10; equation to be solved
+//T(0,t)=40; boundary condition
+//T(10,t)=200; boundary condition
+//f(x)=10; uniform heat source
+//we assume a solution T=a*X^2 + b*x +c
+//differentiating twice we get d2T/dx2=2*a
+a=-10/2;
+//using first boundary condition
+c=40;
+//using second boundary condtion
+b=66;
+//hence final solution T=-5*x^2 + 66*x + 40
+function T=f(x)
+    T=-5*x^2 + 66*x + 40
+endfunction
+count=1;
+for i=0:0.1:11
+    T(count)=f(i);
+    count=count+1;
+end
+x=0:0.1:11
+plot(x,T)
+xtitle("Temperature(T) vs distance(x)","x (cm)","T (units)")
+