已知，用Lagrange线性插值求的近似值为______.http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/2268ea20649747c78ad168ea8627f2ae.png
举一反三
- 已知，用Lagrange线性插值求的近似值为______.http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/8f89f96965e04ca088793581a88b80ab.png
- 已知，则的Lagrange插值多项式为______.http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/181ceea87cf248bbbb7146045a423f89.png
- 已知 ， 则 的 Lagrange 插值多项式为 ______.http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/181ceea87cf248bbbb7146045a423f89.png
- 当 时， ，求 的二次插值多项式为 .http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/cd8a5f6120864650afa1335344aea896.png
- 用Euler法求微分方程<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/624c4b8f8dca46c7bef22714e1ed1722.png" />数值解，取步长<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/a13d85bddaeb4fcd9917aa25748d2e7c.png" />，则<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/70cf8bfe9dc142c6b500f50abf025d17.png" />的计算值为_______. A: 1.94 B: 0.84 C: 0.94 D: 2