清空筛选条件
清空筛选条件

complex number and matlab precision

3 次查看（过去 30 天）
Suma
Suma 2014-5-7
回答： Star Strider 2014-5-7
Hi,
How can I interpret this number? 0.49982+3.5799e-21i
The imaginary part is very small, but exist.
I seek accurate interpretation but I am confused about whether this has something to do with matlab calculation precision or whether this is has something to do with my formula in my algorithm.
I am troubled to understand this for months now.
Thank you

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2014-5-7
It may be some of both. My rule when dealing with situations like this is to simply ignore the imaginary part. If you want a more objective criterion, take the difference between the real part of the complex number and the magnitude (abs) of it. I ignore the imaginary part if the difference is less than 1E-10 if I have no reason to believe the imaginary part is accurate.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Logical 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