describe how the elastic net problem can be solved by the LARS solution path: for fixed X and X2, show that the following problem can be converted to the following Lasso problem with min ||y - XB||2 + 12||B|| + A1 || B||1, ... min ||y* - X* 3||2+A1||3||1, (X), where y = (y, yn), I is the px p identity matrix, and 0 is a p x 1 vector of zero. X* = y* 0