% design the multiplication matrix
k = [ (cos(al))^2, (sin(al))^2, -sin(2*al) ; (sin(al))^2, (cos(al))^2, sin(2*al) ; .5*sin(2*al), -.5*sin(2*al), (cos(al))^2];
disp("The multiplication matrix is displayed below");
disp(k);
% now we multiply the matrix
I = k * [Ixx ; Izz; Ixz] ;
>> table2array(T ({'IxxB (slugft2)','IzzB (slugft2)','IxzB (slugft2)'}, {'a'}))
ans =
948
1967
0
>> table2array(T ({'Angle of attack, u\ (deg)'}, {'a'}))
ans =
5.4000
I pulled this values from my excel file but how do I use them in my "k" and "I" equation? I am sorry if thats an easy answer 
