The following definition of B(x) shows that B. (X) can be written as a product of step functions. K m )(x) = [sm - (, ) km)] k=1 Consider the following binary tree representing a recursive partitioning regression model with the associated basis function. Here terminal nodes are represented by the basis functions and branches are represented by the step functions. B. B. + B + B B What it is the value of Km when m-2? 0 1 02 e 4 3