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Compute Single Order Integral value of a Function in R Programming – integrate() Function

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  • Last Updated : 30 Jun, 2020

integrate() function in R Language is used to compute single order integral of the function provided.

Syntax: integrate(f, lower, upper)

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:


Example 1:

# 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:

# 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
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