There is a free math library in c++. For example, I have used two versions of matcom, VC++ and bcb, but you have to know how to use it. There are about 600-700 mathematical functions and other functions in the library, but the functions are still far from those in matlab. I can send it to you if you want.

Besides, there are other math libraries that I haven't used. You should be able to find some matrix operation libraries online.

LZ, I already said, if you want matcom, I can send it to you, whether it's free or not, anyway, I haven't paid for it in the previous year! I think it's ok. By the way, OPENCV is also free software under VC++, and there are a lot of matrix operation functions on the Internet. It is a bit troublesome to set up this library. It is a library of image processing and motion analysis, so there are many mathematical functions, but I don't like this library. If you want, I have it.