x1=sqrt(16);
x2='sqrt(16)';
disp(' ')
disp('>>x1=sqrt(16);')
disp('>>x2=''sqrt(16)'';')
pause
disp(' ')
disp(['x1=sqrt(16)     ->   ',num2str(4)])
disp(['x2=''sqrt(16)''   ->   ','sqrt(16)'])
pause

disp(' ')
x3=eval(x2);
disp('>>x3=eval(x2)')
pause
disp(' ')
x3=eval(x2)
pause

disp(' ')
x4=2*eval(x2);
disp('>>x4=2*eval(x2)')
pause
disp(' ')
x4=2*eval(x2)
pause

disp(' ')
x5=2*x3;
disp('>>x5=2*x3')
pause
disp(' ')
x5=2*x3
pause

disp(' ')
disp('>>x3~=x1 ')
pause
x3~=x1
pause

disp('>>x3==x1 ')
pause
x3==x1
pause

disp('>>x4>x5 ')
pause
x4>x5
pause

disp('>>x4>x5|x3==x1 ')
pause
x4>x5|x3==x1
pause

disp('>> x4>x5&x3==x1 ')
pause
x4>x5&x3==x1
pause

disp('>> x4>x5|~(x3==x4) ')
pause
x4>x5|~(x3==x4)
pause

disp('>> y=[x3~=x1,x3==x1] ')
pause
y=[x3~=x1,x3==x1]
pause

disp('>> y(1) ')
pause
y(1)
pause

disp('>> y(2) ')
pause
y(2)
pause
