问答题
给定初值问题
【正确答案】正确答案：1)改进的Euler公式为y
i+1
=y
i
+
[f(x
i
，y
i
)+f(x
i+1
,y
i
+hf(x
i
，y
i
))]． 2)局部截断误差R
i+1
=y(x
i+1
)-y(x
i
)-
f(x
i
,y(x
i
))-
[f(x
i
，y
i
)+f(x
i+1
,y
i
+hf(x
i
，y
i
))]． 2)局部截断误差R
i+1
=y(x
i+1
)-y(x
i
)-
f(x
i
,y(x
i
))-
【答案解析】