我们已经使用MathLibX在过去，它一直相当不错。我个人用它做最小二乘法拟合prediction算法，发现它非常容易使用。

We have used MathLibX in the past and it has worked quite well. I personally have used it to do a Least Square Fit "prediction" algorithm and found it very easy to use.

http://www.mathfunctions.com/index.htm

价格为$ 80及它与其他7个功能。

Price is $80, and it comes with 7 other functions.

好运