Home
Class 12
MATHS
Discuss the continuity of the function ...

Discuss the continuity of the function `f(x)={{:(2x-1,ifx<2),((3x)/2 ,ifxgeq2):}`

Text Solution

Verified by Experts

Given function `f(x)={{:(2x-1,ifx<2),((3x)/2 ,ifxgeq2):}`at the point `x=2`
LHL at `x=2`,
`lim_(x->2^-)f(x)`
`lim_(h->0)f(2-h)`
`=lim_(h->0)2(2-h)-1`
`=3`
RHL at `x=2`,
`lim_(x->2^+)f(x)`
`lim_(h->0)f(2+h)`
`=lim_(h->0)(3(2+h))/2`
`=6/2`
`=3`
Also, `f(2)=(3xx2)/2=3`
here, `LHL = RHL =FV`
therefore this function is continuous at `x=2`
Promotional Banner

Topper's Solved these Questions

  • BINOMIAL DISTRIBUTION

    RD SHARMA|Exercise Solved Examples And Exercises|141 Videos
  • DEFINITE INTEGRALS

    RD SHARMA|Exercise Solved Examples And Exercises|567 Videos

Similar Questions

Explore conceptually related problems

Discuss the continuity of the function f(x)={{:(2x -1 "," x lt 1),(3x-2"," x ge 1):}

Discuss the continuity of the function : f(x)={{:(x",if "xge0),(x^(2)",if "xlt0):}

Discuss the continuity of the function f(x)={(sin2x)/x ,ifx<0x+2,ifxgeq0

Discuss the continuity of the function : f(x)={{:((|x-2|)/(2-x)", "xne2),(-1" ,"x=2):} at x = 2

Discuss the continuity of the function : f(x)={{:((|x-2|)/(x-2)", "xne2),(1" ,"x=2):} at x = 2

Discuss the continuity of the function : f(x)={{:((1-cosx)/x^(2)", "xne0),(1", "x=0):} at x = 0.

Discuss the continuity of the function f(x) = {{:( (sin x)/x",", if , x lt 0),( (x+1)",", if , x ge 0):}

Discuss the continuity of the function : f(x)={{:((|x-a|)/(x-a)",when "xnea),(1" ,when "x=a):} at x = a.

Discuss the continuity of the function : f(x)={{:(x", "0lexlt1/2),(1/2", "x=1/2),(1-x", "1/2ltxle1):} at x=1/2

Check the continuity of the function f(x)=2x-1, if x =0

RD SHARMA-CONTINUITY-Solved Examples And Exercises
  1. Discuss the continuity of the function f(x)={{:(2x-1,ifx<2),((3x)/2 ...

    Text Solution

    |

  2. If f(x)=(2x+3sinx)/(3x+2sinx),x!=0 is continuous at x=0 , then find f(...

    Text Solution

    |

  3. For what value of k is the function f(x)={(x^2-1)/(x-1)k, ,x!=1,x=1"...

    Text Solution

    |

  4. Find the values of a and b so that the function f given by f(x)={{:(a ...

    Text Solution

    |

  5. Let f(x)=(log(1+x/a)-log(1-x/b))/x ,\ \ x!=0 . Find the value of f at ...

    Text Solution

    |

  6. If f(x)={{:((cos^2x-sin^2x-1)/(sqrt(x^2+1)-1),if x ne 0),(k,if x=0):},...

    Text Solution

    |

  7. Extend the definition of the following by continuity f(x)=(1-cos7(x...

    Text Solution

    |

  8. Find the value of a for which the function f defined by f(x)={asinp...

    Text Solution

    |

  9. Show that f(x)={{:(1+x^2,if 0lt=xlt=1) ,(2-x, if x >1):} is discontin...

    Text Solution

    |

  10. {{:(x^(2)/2, if 0le x le 1),(2x^(2)-3x+3/2, if l lt x le 2):} at x = ...

    Text Solution

    |

  11. Examine the continuity of the function f(x)= {{:(3x-2,xlt=0),(x+1,x ...

    Text Solution

    |

  12. Discuss the continuity of the function f(x)={{:(x, x>0)(1, x=0)(-x , ...

    Text Solution

    |

  13. Discuss the continuity of the function f(x)={x/(|x|),x!=0 ,x=0

    Text Solution

    |

  14. If f(x)=(tan(pi/4-x))/(cot2x) for x!=pi/4, find the value which can be...

    Text Solution

    |

  15. Show that f(x)={{:(1+x^2,if 0lt=xlt=1) ,(2-x, if x >1):} is discontin...

    Text Solution

    |

  16. Show that f(x)={(x-|x|)/(2), w h e nx!=0 and 2 w h e nx=0 is disconti...

    Text Solution

    |

  17. Find the relationship between a and b so that the function 'f' def...

    Text Solution

    |

  18. If f(x)={(sin3x)/x,w h e nx!=0 1,w h e nx=0dot Find whether f(x) is co...

    Text Solution

    |

  19. Prove that the function f(x)={(sinx)/x,x<0,x+1,xgeq0 is everywhere ...

    Text Solution

    |

  20. Let f(x)={(1-cosx)/(x^2),\ \ \ w h e n\ x!=0 1,\ \ \ \ w h e n\ x=0 . ...

    Text Solution

    |