Question: Can anyone fitting this curve by simple math function

May 29 2012 andy.zhou.nuaa 269
Maple
0

Dear All:

 I have a curve about mosfet  Coss Vs. Vds . the detail math relationship can be found in the following picture: 

  

 Can anyone fitting this picture by simple math function.

 PS: pls don't considering piecewise function 

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