If f(x) and g(x) are defined on domains A, B respectively, then domain of f(x) + g(x) is
| A. | A ∪ B |
| B. | A ∩ B |
| C. | A Δ B |
| D. | A - B |
|
Option: B Explanation : Click on Discuss to view users comments. |
The function f : R - {2} → R defined by f(x) = (x2 + 2x)/(x -2) is
| A. | one-one and onto |
| B. | one-one but not onto |
| C. | neither one-one nor onto |
| D. | not one one but onto |
|
Option: C Explanation : Click on Discuss to view users comments. |
If set S ={x I x is a student in your class} and relation x Ry ↔ x sits in the same row as y, then which of the following statements about R is TRUE?
| A. | Reflexive only |
| B. | Transitive only |
| C. | Refleixve, transitvie and asymmetric |
| D. | Reflexive, transitive and symmetric |
|
Option: D Explanation : Click on Discuss to view users comments. |
