# [R] DEfining and plotting the sum of two functions

arun smartpink111 at yahoo.com
Mon May 20 15:53:43 CEST 2013

```Hi,
Try:
H<-function(x) H1(x)+H2(x)
H1(2)
[#1] 4
H2(2)
#[1] 7
H(2)
#[1] 11

A.K.

----- Original Message -----
From: Honest Chipoyera <Honest.Chipoyera at wits.ac.za>
To: "r-help at r-project.org" <r-help at r-project.org>
Cc:
Sent: Monday, May 20, 2013 8:09 AM
Subject: [R] DEfining and plotting the sum of two functions

I have two functions H1(x) and H2(x) defined separately and I wish to create a new function H(x)  which is the sum of the two functions. I also need to plot the three functions using the command "curve". With the aid of the example program below, can you please explain how I can do that in R.

H1<-function(x) x^2
H2<-function(x) x+5
H<-function(x){H1+H2}
par(mfrow=c(3,1))
curve(H1(x),0,100)
curve(H2(x),0,100)
curve(H(x),0,100)

HW Chipoyera
Cell: 0767190507

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