R arithmetic operations
kodingwindow@kw:~$ R
...

Addition
> 1 + 1
[1] 2

Subtraction
> 1 - 1
[1] 0

Multiplication
> 10 * 10
[1] 100

Division
> 1 / 0
[1] Inf

Power or exponent
> 0 ** 0
[1] 1
> 0 ^ 0
[1] 1

Remainder
> 10 %% 3
[1] 1
R sqrt() function
Square root of a number
> sqrt(25)
[1] 5

> sqrt(2)
[1] 1.414214
R sum() function
> 1:10 + 11:20
[1] 12 14 16 18 20 22 24 26 28 30

Sum of sequence 1 to 10
> sum(1:10)
[1] 55
R mean() and median() functions
> mean(1:10)
[1] 5.5

> median(1:10)
[1] 5.5
R identical() function
> identical(1,1)
[1] TRUE

> identical(1,1.0)
[1] TRUE

> identical(0 ^ 0,0 ** 0)
[1] TRUE
R factorial() function
Factorial of a number
> factorial(0)
[1] 1

> factorial(100)
[1] 9.332622e+157
R trigonometric function
> pi
[1] 3.141593

> sin(30)
[1] -0.9880316

> tan(90)
[1] -1.9952
What Next?
R Date and Time Functions R Functions R Strings
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