Without using matrices or any special libraries:
The dot product of two vectors can be calulated by multiplying them element-wise with * then summing the result.
a <- c(1,2,3) b <- c(4,5,6) sum(a*b)
Without using matrices or any special libraries:
The dot product of two vectors can be calulated by multiplying them element-wise with * then summing the result.
a <- c(1,2,3) b <- c(4,5,6) sum(a*b)