Predict results of these function calls

Exercise Type: Prediction

Instructions

Predict the return value of the function calls based on these definitions:

f1 <- function(x) x^2

f2 <- function(a, b) a - b + 1 

f3 <- function(x){
	val <- paste0("R would say '", x, "'.")
	return(val)
}

f4 <- function(x){
	return(x == 4)
}

A

f1(10)

B

f2(4, 3)

C

f3("wicked!")

D

f4(4)

E

f4(NA)