Home
Class 12
MATHS
For a signum function f(x), the value of...

For a signum function f(x), the value of f(x) at x = -4 is

A

`-1`

B

0

C

`-4`

D

4

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • RELATIONS AND FUNCTIONS

    AAKASH INSTITUTE|Exercise Assignment (Section - B) Objective Type Questions (one option is correct)|87 Videos

  • RELATIONS AND FUNCTIONS

    AAKASH INSTITUTE|Exercise Assignment (Section - C) Objective Type Questions (More than one option are correct)|17 Videos

  • RELATIONS AND FUNCTIONS

    AAKASH INSTITUTE|Exercise Try Yourself|70 Videos

  • PROBABILITY

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION-J (aakash challengers questions)|13 Videos

  • SEQUENCES AND SERIES

    AAKASH INSTITUTE|Exercise Assignment (SECTION - J) Aakash Challengers|12 Videos

Similar Questions

Explore conceptually related problems

Consider a function f(x)=x^(x), AA x in [1, oo) . If g(x) is the inverse function of f(x) , then the value of g'(4) is equal to

If f(x) is a signum function, then f(10) is equal to

Let f(x) be a differentiable function for all x in R The derivative of f(x) is an even function If the period of f(2x) is 1 then the value of f(2)+f(4)-f(6)-f(8) is.

Find the value of a if the function f(x) defined by f(x)={2x-a,x 2 if function continuous at x=2

If f(x)=(x-2)|x-4| sgn(x)AA x in R (Where sgn( x ) denotes signum function) On the basis of above information answer the following questions: f(x) is monotonically increasing in interval-

If f(x)=(x-2)|x-4| sgn(x)AA x in R (Where sgn( x ) denotes signum function) On the basis of above information answer the following questions: f(x) is monotonically increasing in interval-

The function f(x) is defined by f(x)=cos^(4)x+K cos^(2)2x+sin^(4)x, where K is a constant.If the function f(x) is a constant function,the value of k is

AAKASH INSTITUTE-RELATIONS AND FUNCTIONS -Assignment (Section - A) Objective Type Questions (one option is correct)
  1. The function f(x) = x^(2) - 3x + 7 is an example of

    Text Solution

    |

  2. If f(x) is a signum function, then f(10) is equal to

    Text Solution

    |

  3. For a signum function f(x), the value of f(x) at x = -4 is

    Text Solution

    |

  4. If f(x) is a greatest integer function, then f(-2. 5) is equal to

    Text Solution

    |

  5. f(x) = x^(2) implies (f(1.5) - f(1))/(0.25)=?

    Text Solution

    |

  6. Which of the following can represent a linear function for each x in R...

    Text Solution

    |

  7. Let A be a finie set containing n distinct elements. The number of rel...

    Text Solution

    |

  8. Let A be a finite set containing n distinct elements. The number of fu...

    Text Solution

    |

  9. Let A and B infinite sets containing m and n elements respectively. Th...

    Text Solution

    |

  10. Let A = {1, 2, 3}. Which of the following relations is a function from...

    Text Solution

    |

  11. Let R1 and R2 be equivalence relations on a set A, then R1uuR2 may or ...

    Text Solution

    |

  12. Let R be the relation defined on the set N of natural numbers by the r...

    Text Solution

    |

  13. Let a = {a, b, c} and R = {(a, a), (b, b), (c, c), (b, c), (a, b)} be ...

    Text Solution

    |

  14. Let A = {1, 2, 3} and R = {(1, 1), (2,2), (1, 2), (2, 1), (1,3)} then ...

    Text Solution

    |

  15. Let A = {1, 2, 3}. Which of the following is not an equivalence relat...

    Text Solution

    |

  16. Which of the following relation is a function ?

    Text Solution

    |

  17. Let A = {1, 2, 3} and B = {2, 3, 4}, then which of the following is a ...

    Text Solution

    |

  18. The function f: NvecN(N is the set of natural numbers) defined by f(n)...

    Text Solution

    |

  19. Let f : R rarr R be defined by f(x) = x^(2) - 3x + 4 for all x in R, t...

    Text Solution

    |

  20. If f is a function form a set A to A, then f is invertible iff f is

    Text Solution

    |