How to write an optimization Program? can anyone tell me with the help of a matlab program using the program below? I dont know about optimizing. so i couldnt proceed. help please

% *I have 2 variables .

n=[1:.0001:9];

d = linspace(1, 100, length(n));

% i have to put them in these formulas.

[a]=d.*n;

p= (2*pi*[a]*cos(45))/300; % 45 IS IN DEGREES .

[A]=cos(p);

[B]=(1i.*sin(p)/n);

[C]=1i.*n.*sin(p);

[D]=cos(p);

% Reflection coefficient (r)

n(1)=3;

n(3)=5;

[r] = real((n(1).*[A]+n(1).*n(3).*[B]+[C]-n(3).*[D])./(n(1).*[A]+n(1).*n(3).*[B]+[C]+n(3).*[D]));

% REFLECTIVITY

R=([r].^2)*100;

% I need to get the R=30. and show what variables of 'n' and 'd' gets R=30. R=reflectivity .

% This i have to do using optimization. Can any1 do it ??

[Image Analyst]

Instructions for formatting your code