Home
Class 12
MATHS
The minimum value of (1)/(2)(7-cos2x) is...

The minimum value of `(1)/(2)(7-cos2x)` is -

A

`(7)/(2)`

B

4

C

`(5)/(2)`

D

3

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 7|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 4e^(2x) + 9e^(-2x) is-

The minimum value of 2^(sin x) + 2^(cos x) is

Each question has four choices a,b,c and d out of which only one is correct. Each question contains Statement 1 and Statement 2. Make your answer as: If both the statements are true and Statement 2 is the correct explanation of statement 1. If both the statements are True but Statement 2 is not the correct explanation of Statement 1. If Statement 1 is True and Statement 2 is False. If Statement 1 is False and Statement 2 is True. Statement 1: The minimum value of 27^(cos2x)81^(sin2x) is 1/(243) Statement 2: The minimum value of acostheta+bsinthetai s-sqrt(a^2+b^2)

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

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

if x in (-pi/2,pi/2) then the minimum value of cos^2x+(secx/4) is

The minimum value of (sin x+ cos x) is-

Show that , the maximum value of 2x+(1)/(2x) is less than its minimum value.

Find the minimum value of (sec^(-1)x)^2+("c o s e c"^(-1)x)^2

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

CHHAYA PUBLICATION-MCQ ZONE 3 -Question Paper 8
  1. If the line 2x+sqrt(6)y=2 is a tangent to the hyperbola x^(2)-2y^(2)=...

    Text Solution

    |

  2. The equation of the normal to the curve x^(3)+y^(3)=8xy at the point w...

    Text Solution

    |

  3. The curve x=1-3t^(2), y=t-3t^(3) is symmetrical with respect to -

    Text Solution

    |

  4. The equation of the curve in which the portion of the tangent between...

    Text Solution

    |

  5. The equation of the normal to the parabola y^(2)=5x. Which makes an a...

    Text Solution

    |

  6. The maximum value of Z=3x+4y subject to the constraints x+y le 40, x...

    Text Solution

    |

  7. The minimum value of (1)/(2)(7-cos2x) is -

    Text Solution

    |

  8. If g(x)=min(x, x^(2)) where x is a real number then -

    Text Solution

    |

  9. The value of a so that the sum of the squares of the roots of the equ...

    Text Solution

    |

  10. Twenty metres are available to fence a land in the form of a circular...

    Text Solution

    |

  11. Area ( in square unit) of the greatest rectangle that can be inscribe...

    Text Solution

    |

  12. The point on the parabola 2y=x^(2), which is nearest to the point (0,...

    Text Solution

    |

  13. Let f(x) be a differentiable function. If h(x)=(1)/(3) {f(x)}^(3)+{f...

    Text Solution

    |

  14. What is the value of b for which the function f(x)=sinx-bx+c is decre...

    Text Solution

    |

  15. The radius of a circular plate is increasing at the rate of 0.01 cm/s ...

    Text Solution

    |

  16. A spherical balloon is being inflated at the rate of 35 cm^(3)/min. Th...

    Text Solution

    |

  17. Electric current C, measured by a galvanometer, is given by the equati...

    Text Solution

    |

  18. The value of Var (4x+3) is

    Text Solution

    |

  19. If the side of an equilateral triangle increases at the rate of sqrt(3...

    Text Solution

    |

  20. If y=3x^(2)+2 and if x changes from 10 to 10.1, then the approximate ...

    Text Solution

    |