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Step-by-step explanation:

The inequality could be broken into two:

.......................... 1

......................... 2

solving equation 1

add 2 to both sides , we have

divide through by 3 , we have

solving equation 2

add 2 to both sides, we have

divide through by 3

combining the two answers , we have

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