Expand `|{:(3,2,5),(9,-1,4),(2,3,-5):}|` by Sarrus rule.

Expand |(3,4),(2,5)|

Expand |(3,2), (1,1)|

Expand |{:(1,2,3),(4,6,2),(5,9,4):}|

Expand |(2,4),(-5,-1)|

Expand |(3, 6), (5,0)|

Expand |(2, 5), (4x , 7x)|

Expand |( 9, 1), (2, 0)|

Evaluate: |(2,4,5),(5,7,3),(2,4,5)|

Expand |(2a , 3b), (5a , 7a)|

Let A={1,2,3,4}, B={1,5,9,11,15,16} and f={(1,5),(2,9),(3,1),(4,5),(2,11)}. Are the following true? (i) f is a relation from A to B. (ii) f is a function from A to B. Justify your answer in each case.