inverse matrix from result question

I've a problem...

after this code, i obtain 14 2x2 matrix, how can i calculate the inverse of every matrix?

OA=1.42
AB=4.3
BO=3.33
OO=6
alfa=[19.7000,   10.2615,    0.8231,   -8.6154,  -18.0538,  -27.4923,  -36.9308,  -46.3692,  -55.8077,  -65.2462,  -74.6846,  -84.1231,  -93.5615, -103.0000];
beta= [37.3648, 40.5764, 43.6511, 46.4267, 48.7411, 50.4573, 51.4816, 51.7706, 51.3269, 50.1884, 48.4165, 46.0853, 43.2749, 40.0669];
gamma= [-68.0355, -66.333, -63.8261, -60.6513, -56.9882, -53.0279, -48.9467, -44.8871, -40.9515, -37.2048, -33.6824, -30.3996, -27.3598, -24.5623]
for i = 1:14
J = [AB*sind(beta(i)) BO*sind(gamma(i)); AB*cosd(beta(i)) BO*cosd(gamma(i))]
end

if i insert

for i = 1:14
Jinv= inv(J)

end

I have all equal invert matrix

Answer 1

[Omer Yasin Birey]

Hi pablolama, you can use this for inverse of the each 2*2 matrix. In your code, you aren't storing the new J values. So, you would get 14 times of last J's inverse. You have to store them in a cell like below, in order to take inverse's of all of them.

OA=1.42
AB=4.3
BO=3.33
OO=6
J = cell(14,1);
alfa=[19.7000,   10.2615,    0.8231,   -8.6154,  -18.0538,  -27.4923,  -36.9308,  -46.3692,  -55.8077,  -65.2462,  -74.6846,  -84.1231,  -93.5615, -103.0000];
beta= [37.3648, 40.5764, 43.6511, 46.4267, 48.7411, 50.4573, 51.4816, 51.7706, 51.3269, 50.1884, 48.4165, 46.0853, 43.2749, 40.0669];
gamma= [-68.0355, -66.333, -63.8261, -60.6513, -56.9882, -53.0279, -48.9467, -44.8871, -40.9515, -37.2048, -33.6824, -30.3996, -27.3598, -24.5623]
for i = 1:14
J{i} = [AB*sind(beta(i)) BO*sind(gamma(i)); AB*cosd(beta(i)) BO*cosd(gamma(i))]
end

inverseJ = cellfun(@inv,J,'UniformOutput',false);