Home
Class 12
MATHS
Prove that for any f:X rarr Y , f o idx ...

Prove that for any `f:X rarr Y , f o id_x = f =id_Y` of.

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2020

    SHARAM PUBLICATION|Exercise EXERCISE|47 Videos
  • THREE DIMENSIONAL GEOMETRY

    SHARAM PUBLICATION|Exercise EXAMPLE|96 Videos

Similar Questions

Explore conceptually related problems

Prove that f:X rarr Y is surjective iff for all B sube Y, f(f^(-1)(B)) =B.

Prove that f:X rarr Y is injective iff f^(-1) (f(A)) = "A for all" A sube X .

Determine whether the function f:X rarr Y defined by f(x) = 4x + 7, x in X is one-one.

Prove that f: X rarr Y is surjective iff for all A sube X,(f(A))' sube f(A') , where A' denotes the complement of A in X.

Let f:XrarrY . If there exists a map g:YrarrX such that g of= id_x and fo g= id_y then show that g=f^(-1)

Prove that f:X rarr Y is injective iff for all subsets A,B of X,f(A nn B ) = f(A) nn f(B) .

Show that the function f : R rarr R defined as f(x) = x^(2) is neither one-one nor onto.

Show that the function f: R rarr R , f(x)= x^(4) is many-one and into.

State whether the function f : R rarr R, defined by f(x) = 3 - 4x is onto or not.

SHARAM PUBLICATION-RELATIONS AND FUNCTIONS-EXAMPLE
  1. Let **:RtimesRrarrr is defined as a**b=2a+b Find(2**3)**4.

    Text Solution

    |

  2. Let * is a binary operation on set of integers I defined by a**b=3a+4b...

    Text Solution

    |

  3. Prove that for any f:X rarr Y , f o idx = f =idY of.

    Text Solution

    |

  4. Test whether the relation : R = {(m, n):2|(m+n)} on ZZ is reflexive, ...

    Text Solution

    |

  5. Let R be the relation on the set R of real numbers such that aRb iff a...

    Text Solution

    |

  6. Let ~ be defined by (m,n)~(p,q) if mq=np where m, n, p,qinZ-{0}. Show ...

    Text Solution

    |

  7. Show that the relation R defined on the set Z of all integers defined ...

    Text Solution

    |

  8. Find least positive integer x, satisfying 276x+128=4 (mod 7).

    Text Solution

    |

  9. Test whether the relations are reflexive, symmetric or transitive on t...

    Text Solution

    |

  10. Test wheter relations are reflexive, symmetric or transitive on the se...

    Text Solution

    |

  11. If R and S are two equivalence relation on the set then prove that Rca...

    Text Solution

    |

  12. If A = R -{3} and B = R -{1}. Consider the function f:A to B defined b...

    Text Solution

    |

  13. "Let" f(x) =sqrtx "and" g(x) = 1 -x^2. Compute fog and gof and find th...

    Text Solution

    |

  14. The ralation R on Z is defined by for m, nin Z, mRnimpliesm/n is a pow...

    Text Solution

    |

  15. Show that the relation R on the set A={1, 2, 3, 4, 5} given by R={(a,b...

    Text Solution

    |

  16. Show that the relation S defined on set N xx N by (a, b) S(c,d) rArr a...

    Text Solution

    |

  17. Check whether the relation R defined on the set A = {1,2,3,4,5,6} as R...

    Text Solution

    |

  18. If the function'f : R rarrR is given by f(x) = x^(2) +2 and g:R rarr R...

    Text Solution

    |

  19. Let A = R-{2} and B = R - {1}. If f : A rarr B is a function defined b...

    Text Solution

    |

  20. Show that the fuction f in A=R-{2/3} definde as f(x)=(4x+3)/(6x-4) is ...

    Text Solution

    |