The R %*% operator

Question

What is this? I can\'t find help by using ?. (Sorry for being dumb)

> 1%*%1
     [,1]
[1,]    1
> 10%*%10
     [,1]
[1,]  100
> c(1:2)%         


        

Answer 1

This operator is used to multiply a matrix with its transpose.

M = matrix( c(2,6,5,1,10,4), nrow = 2,ncol = 3,byrow = TRUE)

t = M %*% t(M)

print(t)

from tutorialspoints