Matrix.CreatePerspectiveFieldOfView
can someone explain me how the methode Matrix.CreatePerspectiveFieldOfView(fov, aspect, nearClip, farClip);  is defined in XNA --> i mean  the matrix behind it ! 

thanks you !
Matrix.CreatePerspectiveFieldOfView
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can someone explain me how the methode Matrix.CreatePerspectiveFieldOfView(fov, aspect, nearClip, farClip);  is defined in XNA --> i mean  the matrix behind it ! 

thanks you !