integrate() function in
R Language is used to compute single order integral of the function provided.
Syntax: integrate(f, lower, upper)
Parameters:
f: represents a function
lower: represents lower limit of integration
upper: represents upper limit of integration
To know about more option parameters, use below command:
help("integrate")
Example 1:
r
# Create function
f<-function(x) x^3 + 2*x
# Integrate from 0 to 1
integrate(f, 0, 1)
1.25 with absolute error < 1.4e-14
Example 2:
r
# Create function
f <- function(x) {1/((x+1)*sqrt(x))}
# Integrate from 0 to 5
integrate(f, lower = 0, upper = 5)
2.300524 with absolute error < 0.00011
