Home
Class 12
MATHS
f(x)=|x^2-3|x|+2|dot Then which of the f...

`f(x)=|x^2-3|x|+2|dot` Then which of the following is/are true

A

`f'(x)=2x-3" for " x in (0,1) cup (2, oo)`

B

`f'(x)=2x +3 for x in (-oo,-2) cup (-1,0)`

C

`f'(x)=-2x-3" for "x in (-2,-1)`

D

None of these

Text Solution

Verified by Experts

`f(x)=|x^(2)-3x+2|, xge0`
`={{:(|x^(2)-3x+2|",",xge0),(|x^(2)+3x+2|",",xlt0):}`
`{{:(x^(2)-3x+2,x^(2)-3x+2ge,xge0),(-x^(2)+3x-2, x^(2)-3x+2lt0,xge0),(x^(2)+3x+2,x^(2)+3x+2ge0,xlt0),(-x^(2)-3x-2,x^(2)+3x+2lt0,xlt0):}`
`={{:(x^(2)-3x+2",",x in [0, 1] cup[2, oo]),(-x^(2)+3x-2",",x in (1,2)),(x^(2)+3x+2",", x in (-oo,-2]cup[-1,0]),(-x^(2)-3x+2",", x in (-2,-1)):}`
`"or "f'(x)={{:(2x-3",", x in (0,1) cup (2,oo)),(-2x+3",", x in (1,2)),(2x+3",", x in (-oo,-2)cup(-1,0)),(-2x-3",", x in (-2,-1)):}`
Promotional Banner

Topper's Solved these Questions

  • DIFFERENTIATION

    CENGAGE|Exercise Exercise (Comprehension)|23 Videos
  • DIFFERENTIATION

    CENGAGE|Exercise Linked Comprehension Type|1 Videos
  • DIFFERENTIATION

    CENGAGE|Exercise Exercise (Single)|137 Videos
  • DIFFERENTIAL EQUATIONS

    CENGAGE|Exercise Question Bank|7 Videos
  • DOT PRODUCT

    CENGAGE|Exercise DPP 2.1|15 Videos

Similar Questions

Explore conceptually related problems

Let f(x)=log(2x-x^2)+sin(pix)/2dot Then which of the following is/are true? Graph of f is symmetrical about the line x=1 Maximum value of f is1. Absolute minimum value of f does not exist. none of these

Consider the function f(x) = In(sqrt(1-x^2)-x) then which of the following is/are true?

Let f(x) = |x-1| , then which of the following is true

Let f(x)={x^2-4x+3,x<3x-4,xgeq3 a n dg(x)={x-3,x<4x^2+2x+2,xgeq4 then which of the following is/are true? (a) (f+g)(3. 5)=0 (b) f(g(3))=3 (c) (fg)(2)=1 (d) (f-g)(4)=0

Let f(x)=cos^(-1)((1-tan^(2)(x)/(2))/(1+tan^(2)(x)/(2))) . Then which of the following statement is/are true ?

Let f(x) be a twice differentiable function for all real values of x and satisfies f(1)=1,f(2)=4,f(3)=9. Then which of the following is definitely true? (a). f''(x)=2AAx in (1,3) (b) f''(x)= 5 for some x in (2,3) (c) f''(x)=3AAx in (2,3) (d) f''(x)=2 for some x in (1,3)

If f(x)={{:(x^(3)(1-x)",",xle0),(xlog_(e)x+3x",",xgt0):} then which of the following is not true?

Let f:(-pi/2,pi/2)-> RR be given by f(x) = (log(sec x + tan x))^3 Then which of the following is wrong?

If f(x) = {{:(2a-x, "for",-a lt x lt a),(3x-2a ,"for", x ge a):} , then which one of the following is true?

If f(x)={{:(2a-x","" for "-altxlta),(3x-2a","" for "xgea):} then which of the following is true?

CENGAGE-DIFFERENTIATION-Exercise (Multiple)
  1. Let y=sqrt(x+sqrt(x+sqrt(x+oo))) , (dy)/(dx) is equal to 1/(2y-1) (b) ...

    Text Solution

    |

  2. If cos 2theta=(sqrt(2)+1)(cos theta-(1)/(sqrt(2))), then the general v...

    Text Solution

    |

  3. f(x)=|x^2-3|x|+2|dot Then which of the following is/are true

    Text Solution

    |

  4. Let f(x)=(sqrt(x-2sqrt(x-1)))/(sqrt(x-1)-1)xdot Then f^(prime)(10=1 f...

    Text Solution

    |

  5. If x^3-2x^2y^2+5x+y-5=0a n dy(1)=1,t h e n y^(prime)(1)=4/3 (b) y^(1)...

    Text Solution

    |

  6. If y=x^(logx)^(("log"(logdotx))),t h e n(dy)/(dx)i s y/x(1n x^(oox-1)...

    Text Solution

    |

  7. If f(x-y),f(x)f(y),a n df(x+y) are in A.P. for all x , y ,a n df(0)!=0...

    Text Solution

    |

  8. If y=cos^(-1)((2x)/(1+x^2)),t h e n(dy)/(dx)i s (-2)/(1+x^2) for all ...

    Text Solution

    |

  9. fn(x)=e^(f(n-1)(x)) for all n in Na n df0(x)=x ,t h e n d/(dx){fn(x)}...

    Text Solution

    |

  10. Suppose fa n dg are functions having second derivative f" and g' ' eve...

    Text Solution

    |

  11. If y=e^(-x)cosxa n dyn+kn y=0,w h e r eyn=(d^(n y))/(dx^n)a n dkn are ...

    Text Solution

    |

  12. If a function is represented parametrically be the equations x=(1+(lo...

    Text Solution

    |

  13. If y=(x^2)/2+1/2xsqrt(x^2+1)+(log)esqrt(x+sqrt(x^2+1)) , prove that 2y...

    Text Solution

    |

  14. A curve parametrically given by x=t+t^(3)" and "y=t^(2)," where "t in ...

    Text Solution

    |

  15. "If "e^(sin(x^(2)+y^(3)))=tan""(y^(2))/(4)+sin^(-1)x," then y'(0) can ...

    Text Solution

    |

  16. If y=e^(sqrt(x))+e^(-sqrt(x)) , then (dy)/(dx)i se q u a lto (e^(sqrt...

    Text Solution

    |

  17. Let y=sqrt(x+sqrt(x+sqrt(x+oo))) , (dy)/(dx) is equal to 1/(2y-1) (b) ...

    Text Solution

    |

  18. If f(x-y),f(x)f(y),a n df(x+y) are in A.P. for all x , y ,a n df(0)!=0...

    Text Solution

    |

  19. If a function is represented parametrically be the equations x=(1+(lo...

    Text Solution

    |

  20. If y=(x^2)/2+1/2xsqrt(x^2+1)+(log)esqrt(x+sqrt(x^2+1)) , prove that 2y...

    Text Solution

    |