%% Task 4.0
clear all
load deciles

x=1:25;
x=reshape(x,5,5);
y=1:5;
z=(1:5)';


%% Task 4.1
disp('x(3)=')
x(3)
disp('y(3)=')
y(3)
disp('z(3)=')
z(3)
disp('x(11)=')
x(11)
disp('x(1,3)=')
x(1,3)
disp('x(3,1)=')
x(3,1)


%% Task 4.2
disp('x(:,2)=')
x(:,2)
disp('y(:,2)=')
    y(:,2) 
disp('z(2,:)=')
try
z(:,2)
% Error!
catch
    err=lasterror;
    disp('The error message was')
    disp(err.message)
end
    

%% Task 4.3
disp('x(2,:)=')
x(:,2)


%% Task 4.4
disp('x(:,[2 3])=')
x(:,[2 3])
disp('x([2 4],:)=')
x([2 4],:)
disp('x([2 4],[2 3])=')
x([2 4],[2 3])