3+2 
## [1] 5
4-4 
## [1] 0
3*2 
## [1] 6
4*5
## [1] 20
10/2 
## [1] 5
3^9 
## [1] 19683
3^2 
## [1] 9
3^3 
## [1] 27
3^7 
## [1] 2187
2^(2-3) 
## [1] 0.5
100^(1/2)
## [1] 10
sqrt(100)
## [1] 10
pi 
## [1] 3.141593
exp(1) 
## [1] 2.718282
log(exp(1)) 
## [1] 1
log10(1000) 
## [1] 3
log2(8) 
## [1] 3
log(16, base = 4)
## [1] 2
log(16, base = 4) 
## [1] 2
sin(pi/2) 
## [1] 1
cos(0)
## [1] 1