Write a MATLAB program to find the tensile strength sigmaj a

Write a MATLAB program to find the tensile strength (sigma_j) at t_i = 30 by fitting a function to A. Using linear last-squares regression (Regress.m). The input parameters are a_1, a_0, S_r, R^2, and sigma_i. The program SHOULD be written based on the algorithm in Figure 17.6 of the textbook. B. Using Newton\'s interpolating polynomial (NewtInt.m). The input parameters are t, sigma, and t_i and the output parameter is sigma_t. The program SHOULD written based on the algorithm in Figure 18.7 of the textbook. C. Using Lagrange interpolation (Lagmg.m). The input parameters are t, sigma, and t_i and the output parameter is sigma_t. The program SHOULD be written based on the algorithm in Figure 18.11 of the textbook. D. Using MATLAB command polyfit.

Solution

a) Matlab Code

b) Matlab Code

c) Matlab Code