how do i add output of Fx and Fxd?

F(row,i)= Fx + Fxd

[ANIKET KADAM]

clc; clear all;

%%input time=0.2; K=170e6; C=15e-6; x=20e-6; y=20e-6;

%%initialize z = 13; %%z=13 H = 0.005; %%0.005m ld = 0.04; %%0.04m wc = 131; %%w=131rad/s theta = 360/z; tempphi=0; tempsi=0; row = 1; j=1; %counter for increment in defect angle

for t=0:37e-6:time %%time increment si(j)=tempsi; %%initialize defect angle

    for i=1:1:z  %%ball increment
        phi(i)=tempphi;  %%ith ball angle 
        disp('phi = '); phi(i)

        if (phi(i) == si(j))  %%condition for ball in defect region
            thetat = (wc*t) + (2*3.14/z*(z-i))
                Fxd(row,i)= K* (x* cos(phi(i)*(pi/180)) + y* sin(phi(i)*(pi/180)) - (C + H * sin(3.14/(ld*(thetat-phi(i)*(pi/180)))))).^(3/2) * cos(phi(i)*(pi/180));
                disp('Fxd value');               
                disp(Fxd(row,i));

                Fyd(row,i)= K* (x* cos(phi(i)*(pi/180)) + y* sin(phi(i)*(pi/180)) - (C + H * sin(3.14/(ld*(thetat-phi(i)*(pi/180)))))).^(3/2) * sin(phi(i)*(pi/180));
                disp('Fyd value');
                disp(Fyd(row,i));
                disp('defect ball position');

        else          %%condition for ball in non-defect region
                Fx(row,i)= K* (x* cos(phi(i)*(pi/180)) + y* sin(phi(i)*(pi/180)) - C).^(3/2) * cos(phi(i)*(pi/180));
                disp('Fx value');
                disp(Fx(row,i));

                Fy(row,i)= K* (x* cos(phi(i)*(pi/180)) + y* sin(phi(i)*(pi/180)) - C).^(3/2) * sin(phi(i)*(pi/180));
                disp('Fy value');
                disp(Fy(row,i));
                disp('other balls position'); 

        end
        tempphi = phi(i) + theta;

    end
    tempphi = 0;

    tempsi = si(j) + 45;
    if(tempsi >= 360)
        tempsi = 0
    end
    j = j + 1;
    row = row + 1;
end

Answer 1

[Jos (10584)]

What do these 5 variables in the statement " F(row,i)= Fx + Fxd" hold?

To be added like this, Fx and Fxd should have of the same size. The sum (Fx + Dxd) has that size as well. This should fit in the position in F indicated by row and i. So, F(row,i) should have that size as well. If F does not exist, you might want to omit the indices (row,i)

You can check all this by looking at these individual elements of the statement.

[ANIKET KADAM]

thankyou for answer. there was an attached file along with question which displayed the variables meaning.