Math.NET 3.9.0 更新 C# 数学计算包

Math.NET Numerics v3.9.0 更新：

### 3.9.0 – 2015-11-25
* Distributions: Normal.CDF avoids problematic subtraction by using Erfc instead of Erf.
* Statistics: geometric and harmonic mean.
* Statistics: DataContracts for ephemeral serialization on RunningStatistics, DescriptiveStatistics and Histogram.
* BUG: Statistics: Histogram did not adjust lower bound correctly when value was equal to the bound *~Volker Breuer*
* Linear Algebra: minor optimization on how we call Array.Copy.
* BUG: Linear Algebra: fix bug in Complex and Complex32 SparseMatrix.ToTypeString.

下载：https://github.com/mathnet/mathnet-numerics/archive/v3.9.0.zip。

Math.NET的目标是为提供一款自身包含清晰框架的符号运算和数学运算/科学运算，它是C#开发的开源类库。Math.NET含了一个支持线性代数的解析器，分析复杂微分，解方程等等功能。