Home
Class 12
MATHS
Let A be a non-empty set and f : A rarr ...

Let A be a non-empty set and f : A `rarr` A, g : A `rarr` A be two functions such that fog = `I_A = gof`, show that f and g are ijections and that g `= f^-1`

Promotional Banner

Topper's Solved these Questions

  • RELATIONS AND FUNCTIONS

    PRADEEP PUBLICATION|Exercise EXERCISE|401 Videos
  • PROBABILITY

    PRADEEP PUBLICATION|Exercise EXERCISE|467 Videos
  • THREE DIMENSIONAL GEOMETRY

    PRADEEP PUBLICATION|Exercise EXERCISE|373 Videos

Similar Questions

Explore conceptually related problems

Let f : A rarr B and g : B rarr C be onto functions, show that gof is an onto function.

Let A be any non-empty set and f be a bijection on A, prove that f^-1 of = I_A = fof^-1 where I_A is the identity map on A.

Let f: R rarr R and g: R rarr R be two given functions such that f is injective and g is surjective. Then which of the following is injective? a. gof b. fog c. gog d. none of these

If f, g : R rarr R such that : f (x) = x^2 , g (x) = x + 1, then find fog and gof.

Find gof and fog if f: RrarrR and g: R rarr R are given by f(x) = cos x and g (x) =3x^2 Show that gof ne fog

If f, g : R rarr R such that : f (x) = sqrt x , g (x) = x^2 -1 then find fog and gof.

Let f : R rarr R be defined as f(x) = 7x - 3. Find the function g : R rarr R such that fog = gof = 1_R ,

Let f(X) = 3-4 x for all x in R. Find g : R rarr R such that gof = 1_R =fog

Let f,g and h be function from R to R. Show that (f+g) o h = foh + goh

Let f : R rarr R be defined by f(x) = 3x - 2 ad g : R rarr R be defined by g(x) = (x+2)/(3) . Shwo that fog = I_R = gof

PRADEEP PUBLICATION-RELATIONS AND FUNCTIONS-EXERCISE
  1. Let A be a non-empty set and f : A rarr A, g : A rarr A be two functio...

    Text Solution

    |

  2. Let A = (a,b,c) and R be the relation defined on A as follows R = (a,a...

    Text Solution

    |

  3. Let A = (6,7,8,10), B = (2,4,5) a inA , b in B and R be the relation f...

    Text Solution

    |

  4. For the given relation R on a set S, determine which are equivalence r...

    Text Solution

    |

  5. For the given relation R on a set S, determine which are equivalence r...

    Text Solution

    |

  6. For the given relation R on a set S, determine which are equivalence r...

    Text Solution

    |

  7. In the following cases, for the given relation R on the set S, determi...

    Text Solution

    |

  8. In the following cases, for the given relation R on the set S, determi...

    Text Solution

    |

  9. For the given relation R on a set S, determine which are equivalence r...

    Text Solution

    |

  10. Check whether the relation R defined in the set (1, 2, 3, 4, 5, 6) as ...

    Text Solution

    |

  11. Show that R= {(a, b): a ge b} is reflexive and transitive but not sym...

    Text Solution

    |

  12. Let A be the set of human beings living in a town at a particular time...

    Text Solution

    |

  13. Given the relation R = {(1, 2), (2, 3)} on the set of natural numbers,...

    Text Solution

    |

  14. Show that each of the relation R in the set A ={x in z : 0 le x le 12}...

    Text Solution

    |

  15. Show that each of the relation R in the set A = {x in Z : 0 le x le 12...

    Text Solution

    |

  16. Is inclusion of a subset in another, in the context of a universal set...

    Text Solution

    |

  17. If R is a relation in N xx N, show that the relation R defined by (a, ...

    Text Solution

    |

  18. If R is the relation in N xx N defined by (a, b) R (c,d) if and only i...

    Text Solution

    |

  19. Show that the relation R defined by (a, b) R(c,d)implies a+d=b+c in...

    Text Solution

    |

  20. Each of the following defines a relation R in N. x R y if xy is squa...

    Text Solution

    |

  21. Each of the following defines a relation R in N. x R y if xy is squa...

    Text Solution

    |