- (30) . , .. i=0, 1, 2,...,
() xi+1 = xi + h:
(1) .
- , - . - p- , :
(32)
= 2, 3, , ( - ). k, , bkj, (32), , (32) i+1 y(xi+1) O(hp+1) ( , ).
(32) - :
(33)
, (32) =4 (33), .
, Δi, ( 1/6, 2/6, 2/6, 1/6 ), , . ,
. 2
=xi+1 (
).
. 2. -
, (. Δ), f(M), ( =f(x, ) ) , , x=xi+1 () f(E)= ΔABG, . , BD, BE BG. , i+1-, (33).
, , , , , . , .