Home
Class 12
MATHS
If f is defined by f(x)=x^2-4x+7 , show ...

If `f` is defined by `f(x)=x^2-4x+7` , show that `f\ '\ (5)=2f\ '(7/2)`

Text Solution

AI Generated Solution

To solve the problem, we need to show that \( f'(5) = 2f'\left(\frac{7}{2}\right) \) for the function \( f(x) = x^2 - 4x + 7 \). ### Step 1: Find the derivative \( f'(x) \) The derivative of a function \( f(x) \) can be found using the limit definition of the derivative: \[ f'(x) = \lim_{h \to 0} \frac{f(x+h) - f(x)}{h} ...
Promotional Banner

Topper's Solved these Questions

  • DETERMINANTS

    RD SHARMA|Exercise Solved Examples And Exercises|403 Videos
  • DIFFERENTIAL EQUATION

    RD SHARMA|Exercise Solved Examples And Exercises|634 Videos

Similar Questions

Explore conceptually related problems

For the function f,f(x)=x^(2)-4x+7, show that f'(5)=2f'((7)/(2))

If f is defined by f(x)=x^(2), find f'(2)

If f is defined by f(x)=x^(2), find f'(2)

If the function f:R rarr R defined by f(x)=(3^(x)+3^(-x)) , then show that f(x+y) = f(x-y) = 2f(x)f(y) .

If f:RrarrR defined by f(x)=x^(2)-2x+3 , then find f(f(x)) .

If f:R to R is defined by f(x) = x^(2)-3x+2, write f{f(x)} .

If f:R rarr R be the function defined by f(x)=4x^(3)+7, show that f is a bijection.

If f:R rarr R be the function defined by f(x)=4x^(3)+7, show that f is a bijection.

If f:R rarr R be the function defined by f(x)=4x^(3)+7, show that f is a bijection.

If f : [2,oo) to R be the function defined by f(x)=x^(2)-4x+5, then the range of f is

RD SHARMA-DIFFERENTIABILITY-Solved Examples And Exercises
  1. Discuss the differentiability of f(x)=|(log)e x| x > 0.

    Text Solution

    |

  2. If f is defined by f(x)=x^2 , find f\ '\ (2) .

    Text Solution

    |

  3. If f is defined by f(x)=x^2-4x+7 , show that f\ '\ (5)=2f\ '(7/2)

    Text Solution

    |

  4. Show that the derivative of the function f given by f(x)=2x^3-9x^2+...

    Text Solution

    |

  5. If for the function "Phi"(x)=lambdax^2+7x-4,\ \ "Phiprime^"(5)=97 , fi...

    Text Solution

    |

  6. If f(x)=x^3+7x^2+8x-9 , find f\ '\ (4) .

    Text Solution

    |

  7. Find the derivative of the function f defined by f(x)=m x+c at x=0 ...

    Text Solution

    |

  8. Examine the differentiability of the function f defined by f(x)={2x...

    Text Solution

    |

  9. Write an example of a function which is everywhere continuous but f...

    Text Solution

    |

  10. Discuss the continuity and differentiability of f(x)=|log|x|| .

    Text Solution

    |

  11. Discuss the continuity and differentiability of f(x)=e^(|x|) .

    Text Solution

    |

  12. Discuss the continuity and differentiability of f(x)={(x-c)cos(1/(x...

    Text Solution

    |

  13. Is |sinx| differentiable? What about cos|x| ?

    Text Solution

    |

  14. Define differentiability of a function at a point.

    Text Solution

    |

  15. Is every differentiable function continuous?

    Text Solution

    |

  16. Is every continuous function differentiable?

    Text Solution

    |

  17. Give an example of a function which is continuous but not different...

    Text Solution

    |

  18. If f(x) is differentiable at x=c , then write the value of (lim)(x-...

    Text Solution

    |

  19. If f(x)=|x-2| write whether f\ '\ (2) exists or not.

    Text Solution

    |

  20. Write the points where f\ (x)=|(log)e x| is not differentiable.

    Text Solution

    |