help understanding matlab codes in details

hello everyone. I am new learner of matlab who only knows some basics of programming. I am trying to read and understand some downloaded code. Can anyone please tell me how can I read and understand a code line by line? Please help me. Thanks in advance.

Answer 1

[madhan ravi]

Use a cheat sheet https://www.dummies.com/programming/matlab-for-dummies-cheat-sheet/ faster to understand

Answer 2

[Malavika P D]

x = [ 5 6 9 11];

y = [12 13 14 16];

L = 0;

for i =1:length(x)

el=1;

for j=1:length(x)

if j~=i

c = poly(x(j))/(x(i)-x(j));

el = conv(el,c);

end

end

L_term = el*y(i);

L = L+L_term;;

end

polynomial = poly2sym(L);

disp(polynomial)