Given the following data sets:

x $=[0$:$\mathrm{.}4$:$6]$;

y $=[034\mathrm{.}55\mathrm{.}85\mathrm{.}95\mathrm{.}86\mathrm{.}27\mathrm{.}49\mathrm{.}615\mathrm{.}620\mathrm{.}726\mathrm{.}731\mathrm{.}135\mathrm{.}639\mathrm{.}341\mathrm{.}5]$

Figure out how to use the two function polyfit and polyval to create a polynomial $4$th order fit to the

above data, and evaluate the derived function for the value of x $=10.$

Report here the value f $(4)$;

Show your matlab work.