Exercise Chapter I

\(\int_a^b f(x)\,dx = F(x)\Big|_a^b = F(b) - F(a)\)

x <- C(1:5)
print(x)

## [1] 1 2 3 4 5
## attr(,"contrasts")
##       unordered 
## contr.treatment 
## Levels: 1 2 3 4 5