How to avoid rounding error

3 次查看（过去 30 天）
Jiapeng
Jiapeng 2022-9-17
编辑： Chris 2022-9-17
If I want to get the value of sqrt(10001),and it should to be 100.00499...
However, MATLAB shows 100.005.
How should I write the code to get 100.00499...
THANK YOU

请先登录，再回答此问题。

采纳的回答

Chris
Chris 2022-9-17
编辑：Chris 2022-9-17
Ran in:
Matlab is simply truncating the displayed value for ease of reading.
format longG
sqrt(10001)
ans =
100.004999875006
In both cases, the actual value matlab holds in memory is within +/- epsilon of the true value. Epsilon can be calculated like so:
eps(sqrt(10001))
ans =
1.4210854715202e-14

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Get Started with MATLAB 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by