Question

Following is a preview of the matrix x:

Code:

     [,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6

Write the code that return the output:

     [,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6
[3,]    7    8    9

Answer 1

Adding row to the matrix in R:

# adding row to matrix
# taking given matrix
mat1=matrix(c(1:6),nrow=2,ncol=3,byrow=FALSE)
print(mat1)
# here rbind() will combine vectors.Here we are combining vector [7 8 9] to the original matrix
mat2=rbind(mat1,c(7:9))
print(mat2)

output: