Home
Class 12
MATHS
The minimum value of f(x)=2x^(2)+x-1 is-...

The minimum value of `f(x)=2x^(2)+x-1` is-

A

`-(1)/(4)`

B

`(3)/(4)`

C

`(9)/(4)`

D

`-(9)/(8)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • MCQ ZONE 3

    CHHAYA PUBLICATION|Exercise Question Paper 5|30 Videos
  • MCQ ZONE 3

    CHHAYA PUBLICATION|Exercise Question Paper 6|30 Videos
  • MCQ ZONE 3

    CHHAYA PUBLICATION|Exercise Question Paper 3|30 Videos
  • MCQ ZONE

    CHHAYA PUBLICATION|Exercise Question Paper 7|80 Videos
  • MCQ's

    CHHAYA PUBLICATION|Exercise QUESTION PAPER 9|66 Videos

Similar Questions

Explore conceptually related problems

The minimum value of f(x)= x^(2) + (250)/(x) is-

If x is real number, then the minimum value of x^2+x+1 is

The minimum value of (x^2+250/x) is

The minimum value of f(x)=abs(x-1)+abs(x-2)+abs(x-3) is equal to

Find the largest natural number a for which the maximum value of f(x)=a-1+2x-x^2 is smaller than the minimum value of g(x)=x^2-2a x+10-2adot

The minimum value of 9x^2-6x+1 is-

If minimum value of f(x)=x^(2)+2bx +2c^(2) is greater than maximum value of g(x)=-x^(2)-2cx +b^(2) , then for real value of x-

The minimum value of the function f(x)=x^(2)-x+2 is -

Find for what values of x the following functions are maximum and minimum Also find the corresponding maximum and minimum values : f(x)=(x^(2)-7x+6)/(x-10)

Let f(x)=cospix+10x+3x^2+x^3,-2lt=xlt=3. The absolute minimum value of f(x) is 0 (b) -15 (c) 3-2pi none of these

CHHAYA PUBLICATION-MCQ ZONE 3 -Question Paper 4
  1. The optimal value of the objective function in a LPP is attained at po...

    Text Solution

    |

  2. If the tangent at any point P to the parabola y^(2)=4ax meets the dire...

    Text Solution

    |

  3. The point (or points) on the curve y^(3)+ 3x^(2) =12y where tangent i...

    Text Solution

    |

  4. Tangents are drawn to the ellipse 5x^(2)+ 9y^(2)=45 at the four ends o...

    Text Solution

    |

  5. The normal to the parabola y^(2)=8x at the point (2, 4) meets the para...

    Text Solution

    |

  6. A tangent is drawn at the point (3 sqrt(3) cos theta, sin theta) (0 lt...

    Text Solution

    |

  7. A cone of height h is inscribed in a sphere of radius R , if the volum...

    Text Solution

    |

  8. If f(x)=int(x^(2))^(x^(2)+1)e^(-t^(2))dt, then the interval in which f...

    Text Solution

    |

  9. The minimum value of f(x)=2x^(2)+x-1 is-

    Text Solution

    |

  10. The point on the curve xy^(2)=1 that is nearest to the origin is-

    Text Solution

    |

  11. The number of values of x for which f(x)= cos x + cos sqrt(2)x attain...

    Text Solution

    |

  12. The function f(x)= 2x^(3)-15x^(2) +36x + 1 is increasing in the interv...

    Text Solution

    |

  13. The coordinates of the point for minimum value of Z=7x-8y , subject to...

    Text Solution

    |

  14. If M and m are the maximum and minimum values respectively of the func...

    Text Solution

    |

  15. The interval in which the function f(x)= 2x^(2)- log|x|(x ne 0) is in...

    Text Solution

    |

  16. The sides of an equilateral triangle are increasing at the rate of 2 c...

    Text Solution

    |

  17. Air is being pumped into a spherical balloon at the rate of 30 cm^(3)/...

    Text Solution

    |

  18. If the curves xy = a and x = y^(2) intersect at right angles, then-

    Text Solution

    |

  19. A curve having the condition that the slope of tangent at some point i...

    Text Solution

    |

  20. An edge of a variable cube is increasing at the rate of 2 cm//s. When ...

    Text Solution

    |