%krivost rovinne krivky
N = 100; h = 0.01;
x = linspace(1,11,101); 		% dìlení na ose x
y = 1./x;           
kri = diff(y,2)/h^2./(1+diff(y(2:end)).^2/h^2).^(3/2);
plot(x(2:end-1),y(2:end-1),'k',x(2:end-1),kri,'k--')










