. Do some cool operations: Create a 10 x 10 random matrix with the command A=rand ( 10) . Now do the following operations.

Multiply all elements by 100 and then round off all elements of the matrix to integers with the command A=fix (A) .

Replace all elements of A

Replace all elements of A > 90 with infinity ( inf) .

Extract all 30 aij 50 in a vector b, that is, find all elements of A that are between 30 and 50 and put them in a vector b.