Home
Class 12
MATHS
Consider f:NrarrN, g: NrarrN and h:Nrarr...

Consider `f:NrarrN`, `g: NrarrN` and `h:NrarrR` defined as `f(x) = 2x`, `g(y) = 3y + 4` and `h(z) = sin z, forall x, y and z` Show that `ho(gof) = (hog)of`.

Promotional Banner

Topper's Solved these Questions

  • RELATIONS AND FUNCTION

    MODERN PUBLICATION|Exercise EXAMPLE|212 Videos
  • PROBABILITY

    MODERN PUBLICATION|Exercise EXERCISE|543 Videos
  • RELATIONS AND FUNCTIONS

    MODERN PUBLICATION|Exercise EXAMPLE|13 Videos

Similar Questions

Explore conceptually related problems

Let f: NrarrR , be a function defined as f (x) = 4x^2 + 12x + 15, forall x in N , show that f: NrarrS where S, is range of f is invertible.

Let A = {x, y, z), B = {u, v, w} and f : A rarr B be defined by f(x) = u, f(y) = v, f(z) = w. Then, f is

Let f : Z rarr Z be defined as f(n) = 3n for all n in Z . Let g : Z rarr Z be defined as g(n)= n/3 if n is a multiple of 3. g(n)= 0 if n is not a multiple of 3. Show that gof = I_z and fog ne I_Z

It is known that x+y=10 and that x=z. show that z+y=10?

Suppose f, g, and h be three real valued function defined on R. Let f(x) = 2x + |x|, g(x) = (1)/(3)(2x-|x|) and h(x) = f(g(x)) The domain of definition of the function l (x) = sin^(-1) ( f(x) - g (x) ) is equal to

Prove that : sin (y + z-x) + sin (z + x-y) + sin (x +y-z)-sin (x+y+z) = 4 sin x sin y sin z .

Solve using matrices, for x,y and z: 2x-y-z = 7, 3x+y - z = 7, x + y - z = 3.

Consider f, g and h be three real valued function defined on R. Let f(x)=sin3x+cosx,g(x)=cos3x+sinx and h(x)=f^(2)(x)+g^(2)(x). Then, The length of a longest interval in which the function h(x) is increasing, is

If z=x+iy and |z+a|=3|z-a|, show that 2(x^2+y^2)=5ax-2a^2 .

Solve x + 2y + z = 8 , 2x - y + z = 3 , x - 2y + 3z = 6 by matrix method

MODERN PUBLICATION-RELATIONS AND FUNCTION-EXAMPLE
  1. Consider f:NrarrN, g: NrarrN and h:NrarrR defined as f(x) = 2x, g(y) =...

    Text Solution

    |

  2. Which one of the following graph represents the function of x? Why?

    Text Solution

    |

  3. Show that a one-one function f : {1, 2, 3} rarr {1, 2, 3} must be onto...

    Text Solution

    |

  4. Let A be the set of all 50 students of class XII in a school. Let f: A...

    Text Solution

    |

  5. Prove that the function f : RrarrR given by f (x) = 2x is one-one and...

    Text Solution

    |

  6. Show that the function: f: N rarr N given by f(1) = f (2) = 1 and f (x...

    Text Solution

    |

  7. Show that function f: Rrarr R given by f(x) = x^2 is neither one-one n...

    Text Solution

    |

  8. Show that f : NrarrN , given by : f(x) = {(x+1,,if x is odd,,),(x-1,,i...

    Text Solution

    |

  9. If f : R rarr R is defined by f(x) = x + 2, find f(f(x))

    Text Solution

    |

  10. If f : R rarr R be given by: f(x) = (3-x^3)^1//3, then f(f(x)) is:

    Text Solution

    |

  11. If f(x) = (x+1)/(x+2) and g(x) = x^2, then find fog

    Text Solution

    |

  12. If f(x) = (x+1)/(x+2) and g(x) = x^2, then find gof.

    Text Solution

    |

  13. Find gof and fog, if f(x) = |x| and g(x) = |5x -2|

    Text Solution

    |

  14. Let f(x) = (4x+3)/(6x-4), x ne 2/3 .show that fof (x) = x.

    Text Solution

    |

  15. Find gof and fog if f: RrarrR and g: R rarr R are given by f(x) = co...

    Text Solution

    |

  16. If the function f : R rarr R given by f(x) = x^2 +2 and g RrarrR be g...

    Text Solution

    |

  17. Let f : { 1, 2, 3} rarr {a, b, c} be one-one and onto function given b...

    Text Solution

    |

  18. Let A = R- {3} and B = R- {1}. If f: ArarrB is a function defined by ...

    Text Solution

    |

  19. Let Y = {n^2 : n in N} sub N Consider f : N rarr Y as f (n) = n^2 Show...

    Text Solution

    |

  20. Let f: Nrar R be a function defined as : f(x) = 4x^2 + 12 x + 15. Sho...

    Text Solution

    |

  21. Let f : N rarr N be a function deifned by f(x) = 9x^2 + 6x - 5. Show ...

    Text Solution

    |