I need this solved in matlab

so far I have this but it doesn't seem to work:

MLe $=$ @$($n$)((-1)^$n $*$ x$^(2*$n$+1))/$ factorial$(2*$n$+1)$;

$\%$ Initialize variables

estimate $=0$;

prev$\_$estimate $=0$;

$\%$ Perform summation with acceleration

for n $=1$:N$\_$terms

term $=$ MLe$($n$)$;

estimate $=$ estimate $+$ term;

$\%$ Acceleration step

delta $=($estimate $-$ prev$\_$estimate$)/(1-(1/(2^(2*$n$-1))))$;

estimate $=$ estimate $+$ delta;

prev$\_$estimate $=$ estimate;

end

$\%$ Calculate true sine value

true$\_$value $=$ sin$($x$)$;

$\%$ Calculate true percent relative error

eps$\_$t $=$ abs$(($true$\_$value $-$ estimate$)/$ true$\_$value$)*100$;