MATLAB: Error using for loop with transfer function

cell arraysfor looptransfer function

syms eta;
num=[25];
for eta=0:0.2:1
{
den=[1 2*eta*5 0];
G=tf(num,den);
H=feedback(G,1);
i=1;
cell{i}={H}
i++;
}
end;
Error: File: Q1_practise.m Line: 6 Column: 8
The expression to the left of the equals sign is not a valid target for an
assignment.

Best Answer

num=25;
i=1;
cell_data=cell(1,6);
for eta=0:0.2:1
    den=[1 2*eta*5 0];
    G=tf(num,den);
    H=feedback(G,1);
    cell_data{i}={H};
    i=i+1;
end
cell_data
Is this??
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