Symbol results instead of matrix

HI everyone

I have a loop and anticipate to get a sym or equation at the end but I am having a matrix. My question is how can I convert this matrix to symbols so that I can easily evaluate it.

X = [-0.8078;-0.0003;0.0002;1.0035];

x = [x1;x2;x3;x4];

[m,n]=size(x);

    for i=1:n-1
      aa = x(i).^vpa(X(i+1,1))
    end

This is the result.

aa =[1/x1^3.568e-5, x2^7.104e^-6,x3^1.003]

But I would loved it this way

aa =[1/x1^3.568e-5 * x2^7.104e^-6*x3^1.003]

Answer 1

[Walter Roberson]

You are overwriting all of aa each time through the loop.

Perhaps you should initialize

aa = sym(1);

and then in the loop,

aa = aa * x(i).^vpa(X(i+1,1));

[Mahmoud Solomon]

Thanks. It worked.