konwencjonalna
h;blad
-1;-0.28942533571811219
-2;-0.29053023267969469
-3;-0.2894035506745552
-4;-0.28927827849409904
-5;-0.28926563485111573
-6;-0.28926436867622729
-7;-0.28926424203959961

numerowa
h;blad
-1;-0.28942533571811219
-2;-0.28820001568010628
-3;-0.28914765785940066
-4;-0.28925251806548702
-5;-0.28926305551934262
-6;-0.28926411071188496
-7;-0.28926421624288062