start [TransactionAttribute(Autodesk.Revit.Attributes.TransactionMode.Manual)] public class cmdPickPointIn3d : IExternalCommand { public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements) { UIApp
何为导数 1 : 如何求一条直线上一点的切线? what did we learn in high school about what a tangent(切) line is ? :任意一点上的切线都可以有一个方程 y-y0 = k*(x-x0)来表示. 切线:一种极限是当Q趋近于P.->在一条弧线上由P,Q两点如何确定直线PQ,是切线呢?根据定理可得,当一条直线和一条弧线相交于两点的时候这条直线一定不是切线.所以只有当P和Q重合的时候着一条直线才是切线 XP-XQ=Δx , 只有当Δx ->
OpenCASCADE Root-Finding Algorithm eryar@163.com Abstract. A root-finding algorithm is a numerical method, or algorithm, for finding a value x such that f(x)=0, for a given function f. Such an x is called a root of the function f. In OpenCASCADE math
The Neural Network is one of the most powerful learning algorithms (when a linear classifier doesn't work, this is what I usually turn to), and this week's videos explain the 'backprogagation' algorithm for training these models. In this week's progr