R: Matematika Dasar

Contoh operasi matematika

2 ^ 2

2 * 2

2 / 2

2 + 2

2 - 2

4 * 3 ^ 3

vector -4 s/d 3

-4:3

abs remainder

absolute

abs(-4:3)

remainder

(-4:3) %% 2

(-4:3) %/% 3

sign

sign(-4:3)

round

round(7/18,2)

7/118

options(digits=2)
7/118

floor(0.39)

ceiling(0.39)

summary functions

sum(1:3)

prod(c(3,5,7))

min(c(1,6,-14,-154,0))

max(c(1,6,-14,-154,0))

range(c(1,6,-14,-154,0))

any(c(1,6,-14,-154,0)<0)

which(c(1,6,-14,-154,0)<0)

all(c(1,6,-14,-154,0)<0) # all checks if criteria is met by each element

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