Home
Class 11
MATHS
If f: R to R and g: R to R are defined b...

If `f: R to R` and `g: R to R` are defined by `f(x) = 2x^(2) +3` and `g(x) = 3x-2`, then find:
(i) `(fog)(x)`, (ii) `(gof)(x)`, (iii) `(fof)(0)`, (iv) `(go(fof))(3)`

Text Solution

Verified by Experts

The correct Answer is:
(i) `18x^(2)-24x+11`, (ii) `6x^(2)+7`,
(iii) 21,
(iv) 2653
Promotional Banner

Topper's Solved these Questions

  • FUNCTIONS

    AAKASH SERIES|Exercise EXERCISE -1.1 (VERY SHORT ANSWER QUESTIONS)|21 Videos

  • FUNCTIONS

    AAKASH SERIES|Exercise EXERCISE -1.2 (VERY SHORT ANSWER TYPE QUESTIONS)|2 Videos

  • ERRORS AND APPROXIMATIONS

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTION|15 Videos

  • HEIGHTS AND DISTANCES

    AAKASH SERIES|Exercise PRACTICE SHEET Exercise-I (Level-II) (Straight Objective Type Questions)|13 Videos

Similar Questions

Explore conceptually related problems

If f : R to R, g : R to R are defined by f (x) = 2x ^(2) + 3 and g (x) = 3x - 2, then find (fof) (0)

If f : R to R, g : R to R are defined by f (x) = 2x ^(2) + 3 and g (x) = 3x - 2, then find go (fof) (3).

If f : R to R, g : R to R are defined by f (x) = 2x ^(2) + 3 and g (x) = 3x - 2, then find (gof ) (x)

If f:RtoR,g:RtoR are defined by f(x)=2x^(2)+3 and g(x)=3x-2, then find (i) ("fog")(x)

If f:RtoR,g:RtoR are defined by f(x)=2x^(2)+3 and g(x)=3x-2, then find (iii) (fof)(0)

If f:RtoR,g:RtoR are defined by f(x)=2x^(2)+3 and g(x)=3x-2, then find (ii) (gof)(x)

If f : R to R , g : R to R are defined by f (x) = 4x - 1 and g (x) = x ^(2) + 2 then find (fof) (x)

If f : R to R , g : R to R are defined by f (x) = 4x - 1 and g (x) = x ^(2) + 2 then find (gof) (x)

If f:RtoR,g:RtoR are defined by f(x)=2x^(2)+3 and g(x)=3x-2, then find (iv) go(fof)(3) .

AAKASH SERIES-FUNCTIONS -PRACTICE EXERCISE
  1. If f: R to R and g: R to R are defined by f(x) = 2x^(2) +3 and g(x) = ...

    Text Solution

    |

  2. If f(x)=(3x-7)/(5x-3) then (fof)(x)=

    Text Solution

    |

  3. If f:RR rarrRR and g:RR rarrRR are defined by f(x)=2x+3 and g(x)=x^(2)...

    Text Solution

    |

  4. f: R to R is defined by f(x) =x^(2)-5x. Then the inverse image set of ...

    Text Solution

    |

  5. If f: R to [0, infty) defined by f(x) = 10^(x) then f^(-1)(x)=

    Text Solution

    |

  6. The range of 10^(-x) is:

    Text Solution

    |

  7. The range of |x-2|+|x-5| is:

    Text Solution

    |

  8. If A, B are two sets such that n(A) = 15, n(B) = 20, then the number o...

    Text Solution

    |

  9. The number of surjections that can be defined from {1, 2, 3, 4, 5} ont...

    Text Solution

    |

  10. The number of constant functions that can be defined from {1, 2, ……….,...

    Text Solution

    |

  11. If f, g, h are functions from R to R such that f(x) = x^(2)+1, g(x) =s...

    Text Solution

    |

  12. If f(x)=sin(logx), then f(xy)+f(x//y)-2f(x)cos (logy)=

    Text Solution

    |

  13. If f(x)=(1)/(2)[3^(x)+3^(-x)], g(x)=(1)/(2)[3^(x)-3^(-x)] then f(x)g(y...

    Text Solution

    |

  14. If f(x) =cos[pi^(2)]x + cos[-pi^(2)]x where [x] is symmetrical about t...

    Text Solution

    |

  15. The graph of the function y = f(x) is symmetrical about the line x = 3...

    Text Solution

    |

  16. Let f(x) = ax^(3) + bx +c. Then when f is odd,

    Text Solution

    |

  17. a) The number of elements in the range of a constant function. (b) I...

    Text Solution

    |

  18. The value of parameter alpha, for which the function f(x) =1+alphax, a...

    Text Solution

    |

  19. Let f:[4, infty) to [1, infty) be a function defined by f(x) = 5^(x(x-...

    Text Solution

    |

  20. If f: R to R and g: R to R are defined by f(x) =3x-4, g(x)=2+3x and 2(...

    Text Solution

    |

  21. The domain of the definition of the function f(x) = sqrt(4^(x) + 8^(...

    Text Solution

    |