Precise Matrix Power: A^k
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Hello,
I am currently fighting with (more than) double-precision numerics, with which I am not familiar, so the answer probably lies within this topic. I would like to calculate
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/242627/image.png)
with
and
but obviously the precision of
will be bad for big k. Is there a datatype of which I am not aware, or any other trick that will help me? Thanks in advance. :)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/242628/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/242629/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/242630/image.png)
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採用された回答
Rik
2019 年 10 月 14 日
It will probably be helpfull to use the Symbolic Math Toolbox, and use the tips explained here. For mod(a^b,k) there is a direct function, but for your use case there doesn't seem to exist one.
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