$2\mathrm{.}98$ The following data are taken from a stainless steel

tension$-$test specimen:

Also, $A_{\text{@}}=3\mathrm{.}5{10}^{-5}{m}^2,A_f=1\mathrm{.}0{10}^{-5}{m}^2,$

$l_0=50mm.$ Plot the true stress$-$true strain curve for

the material.