对数曲线拟合 Public Function funLogarithm(Num As Long, x() As Single, y() As Single, a As Single, b As Single) As Long 对数曲线拟合,y=a*ln(x)+b Num为输入数据点个数 x()为输入数据点横坐标组成的数组 y()为输入数据点纵坐标组成的数组 a，b为待求系数，为输出项 -failed to translate