create n k matrix in matlab

i need to make n stiffness matrix...

k1=E1*A1/L1* [1 -1; -1 1];
K2=E2*A2/L2* [1 -1; -1 1];
K3...
K4...
..
.
.
KN=EN*A2/LN[1 -1; -1 1]

I TRIED THIS:

for i=1:1:NE
    K(i)=(E(i)*A(i)/L(i)) .* [1 -1; -1 1]
end

where i have defined matrix E A and L but i am not getting it. help me please!

Answer 1

[Walter Roberson]

Use a cell array or a multidimensional array

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

[SAKSHI SINHA]

thank you sir, but could u please elaborate a little?

[Walter Roberson]

 for i=1:1:NE
    K{i}=(E{i}*A{i}/L{i}) .* [1 -1; -1 1];
 end

Are you certain, by the way, that you want matrix division (E{i}*A{i}) * inv(L{i}) ? If you want element-by-element division use ./ instead of /

 for i=1:1:NE
    K{i}=(E{i}*A{i}./L{i}) .* [1 -1; -1 1];
 end

Answer 2

[Thorsten]

If E, A, L are matrices and the ith stiffness matrix is just the scalar s = E(i)*A(i)/L(i)) multiplied with matrix [1 -1; -1 1], you can generate your N stiffness matrices as

 S = E.*A./L;
 T = [1 -1; -1 1];
 K = reshape(T(:)*S(:)', 2, 2, numel(S));

with the ith stiffness matrix given by

Ki = K(:,:,i);