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Tidyverse dplyr glimpse(data)查看數(shù)據(jù)變量類型及前幾個值 summarize(data, Variable = ...

代碼結(jié)果a+bx_ix_1^2x_{22}x^{(n)}^*x^*x_{abcd}^{efgh}\frac{x+y}{2}\frac{1}{1+...