#' powers
#'
#' This pakcage provides with simple operations of vector/dataframe, such as
#' take the square of a vector, take boxcox transformation of a vector, and
#' filter out NA operations on a data frame.
#' @name powers
#' @author Kathy Zhao
#' @note This package serves for the HW9 of STAT547M.
#' @docType package
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