$3\mathrm{.}4(24$ pts$)$ Determine the strength coefficient $)$ and the strain$-$hardening exponent $(n)$ in

the flow curve equation $)=(K{}^n$ by two methods: $($a$)$ fitting a power$-$law model to the

data provided in the previous problem $(10$ pts $),$ and $($b$)$ selecting two points from the

provided data and solving the system of coupled algebraic equations $($Equation $1$: ${}_1=$

$K{}_1^n$ and Equation $2$: ${}_2=K{}_2^n$ where $({}_i,{}_i)$ are points provided in the previous

problem$)$ for the $2$ unknowns K and n $.($c$)$ Why are the answers different and what

answer is more accurate?