ield and Stress The yield stress of many metals depends on the size of the grains. For such metals, the Hall-Petch equation relate the yield stress and the average grain diameter d: and the yield stress of a metal in MPa: dep(0.003. 0.007. 0.017, 0.022, 0.038, 0.061, 0.073, 0.1 15} mm and Oexp {281, 142, 131,94,91,79,72,65] MPa. Complete the given function by writing The following table contains the results from measurement of the average grain diameter in millimeter a subfunction Hal!Petch that takes experimentally measured data to perform a least square curve fitt to determine 0 and k and determine the yield stress of material in MPa with a given grain diameter in millimeter. The subfunction HallPetch should use the internal functions polyfit and polyval a subfunction PWLinearFit that takes experimentally measured data to perform piece-wise linear interpolation to determine the yield stress of material in MPa with a given grain diameter in millimeter. The subfunction PWLinearFit should use the internal function interp1 a subfunction SplineFit that takes experimentally measured data to performs spline interpolation to determine the yield stress of material in MPa with a given grain diameter in millimeter. The subfunction SplineFit should use the internal function spline linInterValue, splineIntervalue]= YieldStress(0.05) >> [fitValue, fitValue - 105.4941 84.9091 88.5457 linInterValue = splineIntervalue =