提供矢量点乘，矩阵相乘，以及矩阵求逆等算法源代码，同时以动态链接库的形式打包，让初学者一个动态库制作的例子。-point by providing vector and matrix multiplication, and matrix inversion algorithm source code, the same time as a dynamic link library in the form of packing for beginners for producing a dynam