can someone help me create this function

Can some one create matlab code for this function? I want the answers of f from 0 to 100.

m= 0 to 5.

n= 0 to 5.

r= 0 to 5 (whole numbers only)

There is one condition : m and n and r never equal 0 at the same time. If first and second = 0 the third never equal to 0

[Walter Roberson]

Our policy is that we do not close Questions that have a meaningful attempt at an Answer -- not unless the Question was abusive or violated legal constraints.

Answer 1

[Image Analyst]

Did you try the super-obvious brute force method of a triple for loop with an "if" test?

c = 340;
Lx = 7.85;
Ly = 6.25;
h = 4.95;
f = zeros(6, 6, 6);
for m = 0 : 5
	for n = 0 : 5
		for r = 0 : 5
			if m==0 && n==0 && r==0
                               % Don't allow all 3 to be zero at the same time.
				continue;
			end
			t = sqrt((m/Lx)^2 + (n/Ly)^2 + (r/h)^2);
                       % Assign t to f if t is in the range 0-100.
                       if t >= 0 && t <= 100
                           f(m+1, n+1, r+1) = t;
                       end
		end
	end
end
fprintf('Done!\n');

Otherwise you could vectorize it with meshgrid().

[toufik mec]

the anwser is something like this

[Image Analyst]

As long as it's not homework (because you can't turn in my work pretending it's your own), you can use this code:

c = 340;
Lx = 7.85;
Ly = 6.25;
h = 4.95;
f = zeros(6*6*6, 4);
row = 1;
for m = 0 : 5
	for n = 0 : 5
		for r = 0 : 5
			temp = (c/2) * sqrt((m/Lx)^2 + (n/Ly)^2 + (r/h)^2);
			if m+n+r >= 1 && temp <= 100
				f(row, :) = [m, n, r, temp];
				row = row + 1;
			end
		end
	end
end
% Crop to only however many we used.
f = f(1:row-1, :);
% Sort on column 4
f = sortrows(f, 4);
% Print out all the rows.
fprintf('m n r f(m,n,r)\n-------------\n');
for row = 1 : size(f, 1)
	fprintf('%d %d %d %.1f\n', ...
		f(row, 1), f(row, 2), f(row, 3), f(row, 4));
end
fprintf('Done!\n');

It will give the table shown in your image.

Answer 2

[David Hill]

count=0;
for m=0:5
    for n=0:5
        for r=0:5
            if r+m+n==0
                break;
            end
            count=count+1;
            f(count)=170*sqrt(m^2/61.6225 + n^2/39.0625 + r^2/24.5025);
            end
        end
    end
end

[toufik mec]

f between 0-100 only how to limit that and if u can give me the answers with table like mentioned above and ty

Answer 3

[David Hill]

count=0;
for m=0:5
    for n=0:5
        for r=0:5
            if r+m+n==0
                continue;
            end
            t=170*sqrt(m^2/61.6225 + n^2/39.0625 + r^2/24.5025);
            if t >= 0 && t <= 100
                count=count+1;
                f(count,:)=[m,n,r,t];
            end
        end
    end
    end

[toufik mec]

ty ty ty