`A={:[(1,2,3,-4),(-1,8,3,2)]:},B={:[b_(ij)]:}_(mxxn)`.
Channel: Doubtnut
Date: 29/03/2020

Pl`A={:[(1,2,3,-4),(-1,8,3,2)]:},B={:[b_(ij)]:}_(mxxn)`. Find the value of m and n for which A+B can be defined.