Home
Class 12
MATHS
If f(x)=|cosx|, then find f'((3pi)/(4))...

If `f(x)=|cosx|`, then find `f'((3pi)/(4))`

Text Solution

Verified by Experts

The correct Answer is:
`(1)/(sqrt(2))`
Promotional Banner

Topper's Solved these Questions

  • CONTINUITY AND DIFFERENTIABILITY

    ARIHANT PUBLICATION|Exercise (PART III) Sample Questions |8 Videos

  • CONTINUITY AND DIFFERENTIABILITY

    ARIHANT PUBLICATION|Exercise (PART III) QUESTION FOR PRACTICE (1 MARK) |8 Videos

  • CONTINUITY AND DIFFERENTIABILITY

    ARIHANT PUBLICATION|Exercise (PART II) Sample Question |11 Videos

  • CHSE ODISHA EXAMINATION PAPER 2020

    ARIHANT PUBLICATION|Exercise GROUP C (ANSWER ANY ONE QUESTIONS)|11 Videos

  • DETERMINANTS

    ARIHANT PUBLICATION|Exercise CHAPTER PRACTICE |39 Videos

Similar Questions

Explore conceptually related problems

It f(x)=|cosx| , then find f.((3pi)/(4))

If f(x)=|cos x-sinx| then find f ' ((pi)/(6))

If f(x)=abs(cos 2x) , then find f'(pi/4+0)

If f(x)=(1-x^(3))^(1/3) then find fof(x) .

If f(x)=(sqrt(2)cosx-1)/(cotx-1),x!=(pi)/(4) . Then, find value of f((pi)/(4)) , so that f(x) becomes continuous at x=(pi)/(4) .

If f(x)=|x|^(3) , then show that f''(x) exists for all real x and find it.

If f(x)=cosx-underset(0)overset(x)int(x-1)f(t)dt , then find f''(x)+f(x) .

ARIHANT PUBLICATION-CONTINUITY AND DIFFERENTIABILITY -(PART II) QUESTION FOR PRACTICE (1 MARK)
  1. Differentiate the following functions : "cosec "(sqrt(x^(2)+2))

    Text Solution

    |

  2. Differentiate the following functions : "sec"((5)/(x))

    Text Solution

    |

  3. If f(x)=|cosx|, then find f'((3pi)/(4))

    Text Solution

    |

  4. If x^(2//3)+y^(2//3)=a^(2//3), then find (dy)/(dx)

    Text Solution

    |

  5. Prove that the function f gives by f(x)=|x-1|x in R is not differentia...

    Text Solution

    |

  6. Show that the function f(x)=|x-1|+|x+1| AA x in R is not differentia...

    Text Solution

    |

  7. A function f(x) is defined as follows : f(x)={(x^(2)"sin"(1)/(x)", i...

    Text Solution

    |

  8. Let f(x)=x|x|,AA x in R. Discuss the derivability of f(x) at x=0.

    Text Solution

    |

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

    Text Solution

    |

  10. Discuss the continuity and differentiability of function f(x)=|x|+|x-1...

    Text Solution

    |

  11. Prove that the greatest interger function defined by f(x)=[x],0ltxlt3 ...

    Text Solution

    |

  12. If f(x)=|cos x-sinx| then find f ' ((pi)/(6))

    Text Solution

    |

  13. Differentiate sqrt(tan sqrt(x)) w.r.t. x.

    Text Solution

    |

  14. Differentiate cos x^(3)* sin^(2)(x^(5)) w.r.t.x.

    Text Solution

    |

  15. If y=sin[sqrt(sin sqrt(x))], then find (dy)/(dx).

    Text Solution

    |

  16. If y=xtan x+secx, then find the value of (dy)/(dx) at x=(pi)/(4).

    Text Solution

    |

  17. If y=sin^(3)sqrt(ax^(2)+bx+c) then find (dy)/(dx)

    Text Solution

    |

  18. If y=[x+sqrt(x^(2)+a^(2))]^(n), then prove that (dy)/(dx)=(ny)/(sqrt(x...

    Text Solution

    |

  19. If y=sqrt((1-sin2x)/(1+sin2x)), then show that (dy)/(dx)+sec^(2)((pi)/...

    Text Solution

    |

  20. Prove that y=tan(x+y), then (dy)/(dx)=(1+y^(2))/(-y^(2))

    Text Solution

    |