symbolic calculation in MATLAB

syms x t

U=zeros(1,2,'sym');

series1(x,t)=sym(zeros(1,1));

for k=1:10

U(k)=(-x)^k-1/(factorial(k))

end

for k=1:9

series1(x,t)=simplify(series1(x,t)+U(k)*(power(t,k-1)));

end

series1

C1=zeros(1);

for x=1:3:6

e=(x-1);

for t=1:3:6

f=(t-1)/10;

C1(x,t)=series1(e,f);

end

end

vpa(C1,15)

In command window following result is dispalyed:

[ -1.0, 0, 0, -1.16619602524777]

[ 0, 0, 0, 0]

[ 0, 0, 0, 0]

[ -4.0, 0, 0, -3.35685995524777]

Why in between zeros are diaplayed and if I dont want to dispaly the zeros what changes should I make?

[YOGESHWARI PATEL]

thank you

Answer 1

[Awais Saeed]

You are not storing in C1 properly. You are using x and t, whihc are incrementing with a step size of 3.

syms x t
U=zeros(1,2,'sym');
series1(x,t)=sym(zeros(1,1));
for k=1:10
U(k)=(-x)^k-1/(factorial(k));
end

for k=1:9
    series1(x,t)=simplify(series1(x,t)+U(k)*(power(t,k-1)));
end
row = 0;
for x=1:3:6
    row = row + 1;
    col = 0;
    e=(x-1);
    for t=1:3:6
        col = col + 1;
        f=(t-1)/10;
        C1(row,col)=series1(e,f);
    end
end
vpa(C1,15)

ans = 

[YOGESHWARI PATEL]

thank you