# Multiplying Vectors in R

• Comments posted to this topic are about the item Multiplying Vectors in R

• I believe that the line j <- (4,5) is missing a 'c'. As written the answer should be Error: unexpected ',' in "j <- (4,". Good question though. Thank you Steve.

• Thanks, good catch. You are correct.

this is fixed.

• In addition to the missing 'c' on second vector, error will be thrown on matrix multiplication due to second vector being 1 element shorter than the first. Add 1 to end of second vector. Result 4 10 3.

• Not an error. A warning. This still works:

`> i <- c(1,2,3)> j <- c(4,5)> k <- i * jWarning message:In i * j : longer object length is not a multiple of shorter object length> k[1]  4 10 12`
• i <- c(1,2,3)

> j <- c(4,5)

> k <- i * j

Warning message:

In i * j : longer object length is not a multiple of shorter object length

> k

[1] 4 10 12

>

I stand corrected, my apologies.

Saw the warning: (my brain registered Error), and did not display the k value.

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