The second derivative with respect to V.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 16.0.0.0 (16.0.0.0)
Since: 2016

Syntax

C#
`public XYZ VVDerivative { get; }`

Visual Basic
`Public ReadOnly Property VVDerivative As XYZ Get`

Visual C++
`public: property XYZ^ VVDerivative { XYZ^ get (); }`

See Also