$\%$ Declare x as a symbolic variable if not already declared

syms x;

$\%$ Initialize the sum

sum$\_$terms $=0$;

$\%$ Number of terms to calculate

num$\_$terms $=7$;

$\%$ Loop through the terms and calculate the sum

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

$\%$ Calculate the nth term

term $=(2/(2*$n $-1))*$ x$^(2*$n $-1)$;

$\%$ Add the term to the sum

sum$\_$terms $=$ sum$\_$terms $+$ term;

end

$\%$ Display the sum of the first $7$ terms

disp$([\text{'}$The sum of the first $7$ terms of the series is:$\text{'}])$;

disp$($sum$\_$terms$)$;