'How can I expand a vector into the arguments of a function in r?

If I have the function with three individual arguments

fun <- function(a,b,c){
    a+b^2*c
}

How can I call it using a single vector

my_vector <- c(1,2,3)
fun(my_vector)

Solution 1:^[1]

This should work!

fun(1,2,3)

Otherwise,

fun <- function(x){
                   x[1]+x[2]^2*x[3]
                   }
fun(c(1,2,3))

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Solution	Source
Solution 1	yc_hello