powered by
is_positive(x)
is_negative
is_positive(1) is_positive(0) is_positive(-1) is_positive(iris$Species) is_positive(iris) is_positive(list(1, 0, -1, iris)) set.seed(999) M = matrix(rnorm(12), 4, 3) is_positive(M)
Run the code above in your browser using DataLab