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// Scilab Code Ex4.18: Page-134 (2006)
clc; clear;
// We have from Mattheissen rule, rho = rho_0 + alpha*T1
T1 = 300; // Initial temperature, K
T2 = 1000; // Final temperature, K
rho = 1e-06; // Resistivity of the metal, ohm-m
delta_rho = 0.07*rho; // Increase in resistivity of metal, ohm-m
alpha = delta_rho/(T2-T1); // A constant, ohm-m/K
rho_0 = rho - alpha*T1; // Resistivity at room temperature, ohm-m
printf("\nThe resistivity at room temperature = %4.2e ohm-m", rho);
// Result
// The resistivity at room temperature = 1.00e-006 ohm-m
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