The coordinates of a given point are (m, 2n). what are the coordinates of the point when it is translated 2 units to the right?

a) (m+2, 2n+2)
b) (m, 2n+2)
c) (2m, 4n)
d) (m+2, 2n)

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b