Home
Class 12
MATHS
{{:(x^(2)/2, if 0le x le 1),(2x^(2)-3x+3...

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

Text Solution

Verified by Experts

The correct Answer is:
N/a

We have, `{{:(x^(2)/2, if 0le x le 1),(2x^(2)-3x+3/2, if l lt x le 2):}` at `x = 1`
At `x = 1, HL = underset(xrarr1^(-))(lim)(x^(2))/(2)=underset(hrarr0)(lim)((1-h)^(2))/(2)`
`= underset(hrarr0)lim(1+h^(2)-2h)/(2)=(1)/(2)`
RHL `= underset(xrarr1^(+))lim(2x^(2)-3x+3/2)`
`= underset(hrarr0)lim[2(1+h)^(2)-3(1+h)+3/2]`
`= underset(hrarr0)(lim)(2+2h^(2)+4h-3-3h+3/2)=-1+3/2 = 1/2`
and `f(1) = (1^(2))/(2)=1/2`
Hence , `f(x)` is continuous at `x = 1`.
Promotional Banner

Topper's Solved these Questions

  • APPLICATION OF INTEGRALS

    NCERT EXEMPLAR|Exercise Application Of Integrals|68 Videos
  • DETERMINANTS

    NCERT EXEMPLAR|Exercise Determinants|58 Videos

Similar Questions

Explore conceptually related problems

f(x) {:(=(x^(2))/2" , if " 0 le x lt 1 ),(= 2x^(2)-2x +3/2 ", if " 1 le x le 2 ):} is discontinuous at x = ……

If f(x)={{:(,(x^(2))/(2),0 le x lt 1),(,2x^(2)-3x+(3)/(2),1 le x le 2):} then,

If f(x) {:(=-x^(2)", if " x le 0 ), (= 5x - 4 ", if " 0 lt x le 1 ),(= 4x^(2)-3x", if " 1 lt x le 2 ):} then f is

f(x) = {{:((sqrt(1+kx)-sqrt(1-kx))/(x),if -1 le x lt 0),((2x+1)/(x-1),if 0 le x le 1):} at x = 0 .

f(x) = {{:((sqrt(1+kx)-sqrt(1-kx))/(x),if -1 le x lt 0),((2x+1)/(x-1),if 0 le x le 1):} at x = 0 .

If f(x)={{:(,x^(2)+1,0 le x lt 1),(,-3x+5, 1 le x le 2):}

If f(x) {:(=x^(2)+ax+b", if "0 le x lt 2 ),(= 3x+2", if " 2 le x le 4 ),(=2ax + 5b ", if " 4 lt x le 8 ) :} is continuous on [ 0,8] then a-b = ……

If f(x) is continuous in [-2, 2], where f(x)={:{ ((sin ax)/(x)-1", for "-2 le x lt 0),(2x+1", for " 0 le x le 1),(2bsqrt(x^(2)+3)-1", for " 1 lt x le 2):} , then a+b=

If f(x) = {{:(|1-4x^(2)|",",0 le x lt 1),([x^(2)-2x]",",1 le x lt 2):} , where [] denotes the greatest integer function, then

NCERT EXEMPLAR-CONTINUITY AND DIFFERENTIABILITY-Continuity And Differentiability
  1. f(x) = {{:(|x|sin\ (1)/(x-a),if x ne 0),(0, if x =a):} at x = a

    Text Solution

    |

  2. f(x)={{:(e^(1//x)/(1+e^(1//x)),if x ne 0),(0,if x = 0):} at x = 0

    Text Solution

    |

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

    Text Solution

    |

  4. f(x) = |x| + |x-1| at x = 1.

    Text Solution

    |

  5. f(x)={{:(3x-8, if x le 5),(2k, if x gt 5) :} at x = 5

    Text Solution

    |

  6. If f(x)={(2^(x+2)-16)/(4^x-16),ifx!=2k ,ifx=2i scon t inuou sa tx=2,f...

    Text Solution

    |

  7. f(x) = {{:((sqrt(1+kx)-sqrt(1-kx))/(x),if -1 le x lt 0),((2x+1)/(x-1),...

    Text Solution

    |

  8. f(x) = {{:((1-coskx)/(x sinx), if x ne 0),(1/2, if x = 0):} at x = 0

    Text Solution

    |

  9. Prove that the function f defined by f(x) = {{:((x)/(|x|+2x^(2)), if ...

    Text Solution

    |

  10. Find the values of a and b sucht that the function f defined by ...

    Text Solution

    |

  11. If the function f(x) = 1/(x+2), then find the points of discountinu...

    Text Solution

    |

  12. Find all point of discountinuity of the function f(t) = (1)/(t^(2)...

    Text Solution

    |

  13. Show that the function f(x) = |sinx+cosx| is continuous at x = p...

    Text Solution

    |

  14. Examine the differentiability of f, where f is defined by f(x) =...

    Text Solution

    |

  15. f(x) = {{:(x^(2)sin'1/x, if x ne 0),(0, if x = 0):} at x = 0.

    Text Solution

    |

  16. f(x)={{:(1+x, if x le 2),(5-x,ifx gt 2):} at x = 2.

    Text Solution

    |

  17. Show that f(x) = |x-5| is continuous but not differentiable at x =...

    Text Solution

    |

  18. A function f : R rarr R satisfies the equation f(x+y) = f(x). f(y...

    Text Solution

    |

  19. 2^(cos^(2)) x

    Text Solution

    |

  20. (8^(x))/(x^(8))

    Text Solution

    |