Home
Class 11
MATHS
f(x)= 3x^(2)-1 and g(x)= 3 + x. If f= g ...

`f(x)= 3x^(2)-1 and g(x)= 3 + x`. If f= g then the value of x is…….

A

1

B

`(4)/(3)`

C

`-(4)/(3)`

D

`(3)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • RELATIONS AND FUNCTIONS

    KUMAR PRAKASHAN|Exercise Textbook Illustrations for Practice Work|30 Videos

  • RELATIONS AND FUNCTIONS

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems|34 Videos

  • RELATIONS AND FUNCTIONS

    KUMAR PRAKASHAN|Exercise Miscellaneous Exercise|15 Videos

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise PRACTICE WORK|40 Videos

  • SEQUENCE AND SERIES

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems -Question of Module|19 Videos

Similar Questions

Explore conceptually related problems

If the function f(x)=x^(3)+e^(x//2)andg(x)=f^(-1)(x) , then the value of g'(1) is

f(x)= x^(2)-3x + 4 If f(x)= f(2x+1) find the value of x .

f: R rarrR be defined by f(x) =x/2+3, g: R rarr R be defined by g(x) = 2x-K . If fog = gof then find the value of K.

If f : R rarr R and g : R rarr R be two mapping such that f(x) = sin x and g(x) = x^(2) , then find the values of (fog) ((sqrt(pi))/(2)) and (gof)((pi)/(3)) .

f and g are real functions defined by f(x)= 2x + 1 and g(x) =4x -7. If f(x) = g(x) then x = …. .

If f and g are real functions defined by f(x)= x^(2) + 7 and g(x)= 3x + 5 . Then, find each of the following f(-2) + g(-1)

If f and g are real functions defined by f(x)= x^(2) + 7 and g(x)= 3x + 5 . Then, find each of the following f((1)/(2)) xx g (14)

If f and g are real functions defined by f(x)= x^(2) + 7 and g(x)= 3x + 5 . Then, find each of the following f(1)-f(-2)

If f and g are real functions defined by f(x)= x^(2) + 7 and g(x)= 3x + 5 . Then, find each of the following f(3) + g(-5)

KUMAR PRAKASHAN-RELATIONS AND FUNCTIONS-Textbook based MCQs
  1. Domain of the function defined by f(x)= sqrt(4x-x^(2)) is……

    Text Solution

    |

  2. Domain of the function defined by f(x)= sqrt(5|x|)=x^(2)-6 is…….

    Text Solution

    |

  3. Range of f(x)= (x^(2)-x)/(x^(2)+ 2x) is …….

    Text Solution

    |

  4. Range of the function f(x)= (x^(2) + x + 2)/(x^(2) + x + 1) is……

    Text Solution

    |

  5. f(x)= bx^(2) + cx and d and f(x+ 1) - f(x)= 8x + 3 then…….

    Text Solution

    |

  6. f(x)= 2x^(n) + a. If f(2)= 26 and f(4)= 138 then the value of f(3) is…...

    Text Solution

    |

  7. Domain of the function defined by f(x)= sqrt(x-1) + sqrt(3-x) is…..

    Text Solution

    |

  8. Range of the function f(x)= (x+2)/(|x+2|), x ne -2 is……

    Text Solution

    |

  9. If 2f (x)- 3f((1)/(x))= x^(2) (x ne 0) then f(2)= ……

    Text Solution

    |

  10. The graph of an identity function I(R ): R rarr R is………

    Text Solution

    |

  11. Range of the function f: R rarr R, f(x)= x^(2) is………

    Text Solution

    |

  12. If f: R rarr R, f(x)= x-2, g: R rarr R, g(x)= x + 2 then (f+ g) (x)= …...

    Text Solution

    |

  13. f(x)= x, g(x)= (1)/(x) and h(x)= f(x) g(x). If h(x) = 1 then…….

    Text Solution

    |

  14. If f(x)= (x-3)/(x + 1) then f[f {f(x)}]= …….

    Text Solution

    |

  15. If f(x)= 64 x^(3) + (1)/(x^(3)) and alpha and beta are roots of the e...

    Text Solution

    |

  16. Range of greatest integer function is…….

    Text Solution

    |

  17. f(x)= 3x^(2)-1 and g(x)= 3 + x. If f= g then the value of x is…….

    Text Solution

    |

  18. The function 't' which maps temperature in degree Celsius into tempera...

    Text Solution

    |

  19. A and B are non null sets. Any one out of A and B is infinite then A x...

    Text Solution

    |

  20. Domain of f(x)= sqrt(2-2x-x^(2)) is………

    Text Solution

    |