Maths Crossword

4. Empty Relation is also called____ relation
5. The set of input values in a relation
7. The number of functions in a matrix
9. the ______ is the transpose of the matrix of the cofactors
11. A relation in a set A is an/a _________ relation if R is reflexive, symmetric and transitive
14. Onto function also called
15. The _______ matrix has 1s on the diagonal and 0s off the diagonals
18. A diagram used to determine whether a relation is or is not a function
20. All the ordered pairs (a,b) such that a belongs to A and b belongs to B is called

1. ______ is what remains after removal of a row and column from a matrix
2. Union of equivalence classes gives
3. Range of a relation is always a subset of
6. only these type of matrices have determinants
8. If A is a matrix of order 3x3, then the number of minors in determinant of A are
10. A matrix whose determinant is zero
12. A function is invertible only if the function is
13. a matrix type whose inverse doesn’t exist
16. Let L denote the set of all straight lines in a plane. Let a relation R be defined by lRm if and only if l is perpendicular to m for all l, m belongs to L. Then R is
17. A matrix which has only one row
19. A matrix equal to its transpose