Determine the minimum factor of safety for yielding. Use both the maximum-shear-stress theory and the distortion-energy theory and compare the results. The material is 1018 CD steel. σ1=1.250 ksiσ1=1.250 ksi , σ2=-26.09 ksiσ2=-26.09 ksi , and τmax=13.66 ksiτmax=13.66 ksi . (Round the final answers to three decimal places.)