If A is a 3 × 3 matrix, whose elements are given by , then write the value of .


If A is a matrix of order 3 x 4 and B is a matrix of order 4 x 3, then find order of matrix (AB.)
If f is an invertible function, defined as f(x) = , then write
Let R={(a,a³): a is a prime number less than 5} be a relation. Find the range of R.
Write the sum of the order and degree of the differential equation.