Basic math in R

Using R for the calculator is like buying a plane ticket to get free peanuts. But I have done my taxes in R, so…

2 + 2 # addition

[1] 4

5 - 2 # subtraction

[1] 3

0.5 * 6 # multiplication

[1] 3

3 / 4 # division

[1] 0.75

sqrt(2) # square root

[1] 1.414214

4 ^ 2 # exponent

[1] 16

exp(4.9) # base-e exponent

[1] 134.2898

log(7) # natural log

[1] 1.94591

abs(-6) # absolute value

[1] 6

ceiling(4.6) # round up

[1] 5

floor(4.6) # round down

[1] 4

factorial(4) # n! = n x (n-1) x ... x 2 x 1

[1] 24

choose(8, 3) # binomial coefficient (we'll get there)

[1] 56