If `A^3=[[-3, 0] , [7,9]]` then `|A|=`

If A=[(3,4),(7,9)] and AB=I then B=

|[3,4],[9,-7]|=

A= [[-2,5,7] , [0,3,2], [9,4,1]] Find A' and |A|

If A=[(0, 4, 9), (8, 3, 7)], B=[(7, 3, 8), (1, 4, 9)] find the value of 3A-9B

If A=[(0, 4, 9), (8, 3, 7)], B=[(7, 3, 8), (1, 4, 9)] find the value of B-5A

Let f={(2, 7), (3, 4), (7, ,9), (-1, 6), (0, 2), (5, 3)} be function from A={-1, 0, 2, 3, 5, 7} , to B={2, 3, 4, 5, 7, 9} . Is this an one-one function

Let f={(2, 7), (3, 4), (7, ,9), (-1, 6), (0, 2), (5, 3)} be function from A={-1, 0, 2, 3, 5, 7} , to B={2, 3, 4, 5, 7, 9} . Is this both one-one and onto function

Let f={(2, 7), (3, 4), (7, ,9), (-1, 6), (0, 2), (5, 3)} be function from A={-1, 0, 2, 3, 5, 7} , to B={2, 3, 4, 6, 7, 9} . Is this an onto function