Figure 4:
The eleventh-order HAM and NHAM solutions (
3.49
) with
ℏ
=
−
0
.
7
9
9
8
for HAM solution and
ℏ
=
−
0
.
7
for NHAM solution versus RK78 solution for the (
3.35
) when
𝑎
=
1
.
2
,
𝑏
=
2
.
9
2
and
𝑐
=
6
.
