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diff --git a/260/CH14/EX14.3/14_3.sce b/260/CH14/EX14.3/14_3.sce
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+//Eg-14.3
+//pg-583
+
+clear
+clc
+close()
+
+//Analytically solving the given equation using central difference formula we get 3 equations at 3 internal points
+
+// At point 1    T0 - 2*T1 + T2 = -3.125    (1)
+// At point 2    T1 - 2*T2 + T3 = -3.125    (2)
+// At point 3    T2 - 2*T3 + T4 = -3.125    (3)
+
+// Using BC 1     T-1 = T1
+// Using BC 2     T5 = T3 - 0.25*T4 + 75;
+
+// using BC 1 in (1), we get     T1 - T0 = -1.5625    (4)
+// using the value of T5 in the BC gives     2*T3 - 2.25*T4 = -78.125    (5)
+
+//Solving these equations gives the values of T at different points
+
+A = [1 -2 1 0 0;0 1 -2 1 0;0 0 1 -2 1;1 -1 0 0 0;0 0 0 2 -2.25];
+B = [-3.125;-3.125;-3.125;1.5625;-78.125];
+
+X = inv(A)*B;
+
+x = 0:0.25:1;
+
+plot(x,X,'ks')
+
+//Analytically
+
+L = 1;
+x1 = 0:0.01:1;
+T = 300 + 50*L^2/(2)*(1-(x1/L)^2 + 2*2);
+
+plot(x1,T)
+
+xlabel('x(m)')
+ylabel('T(K)')
+legend('FD solution','Analytical Solution')
+\ No newline at end of file