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The set of all values of x satisfying th...

The set of all values of x satisfying the inequations `(x-1)^(3) (x+1) lt 0` is

A

`(-1, 1)`

B

`(-oo, -1)`

C

`[-1, 1]`

D

`(-1, oo)`

Text Solution

Verified by Experts

The correct Answer is:
A
We have,
`(x-1)^(3)(x + 1) lt 0`
`rArr (x-1)^(2) (x-1)(x+1) gt 0`
`rArr (x-1)(x+1) lt 0 " "[because (x-1)^(2) ge 0 "for all "x in R]`
`rArr -1 lt x lt 1 rArr x in (-1, 1)`
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OBJECTIVE RD SHARMA ENGLISH-ALGEBRAIC INEQUATIONS-Exercise
  1. The set of all values of x satisfying the inequations (x-1)^(3) (x+1) ...

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  2. The solution set of the inequation (x+4)/(x-3) le2, is

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  3. If (3(x-2))/(5)gt=(5(2-x))/(3), then x belongs to the interval

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  4. solve the inequation (2x+4)/(x-1) ge 5 and represent this solution on ...

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  5. The solution set of the inequation (4x + 3)/(2x-5) lt 6, is

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  6. The number of integral solutions of 2(x+2)gt x^(2)+1, is

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  7. If |3x + 2| lt 1, then x belongs to the interval

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  8. The solution set of the inequation |2x - 3| < |x+2|, is

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  9. The solution set of the inequation |(3)/(x)+1| gt 2, is

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  10. The solution set of the inequation 0 lt |3x+ 1|lt (1)/(3), is

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  11. The solution set of the inequation (x^2-3x+4)/(x+1) > 1, x in RR, is

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  12. The solution set of the inequation... 2/(|x-4|) >1,x != 4 is ...

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  13. What is the solution set of the inequality (1)/(|x|-3) lt (1)/(2) ?

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  14. The solution set of the inequation |(2x-1)/(x-1)| gt 2, is

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  15. The solution set of the inequation (|x-2|)/(x-2) lt 0, is

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  16. Write the solution set of inequation |x+1/x|> 2.

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  17. If the complete set of value of x satisfying |x-1| + |x-3| ge (-oo, a ...

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  18. The solution set of x^(2) + 2 le 3x le 2x^(2)-5, is

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  19. Writhe the set of values of x satisfying |x-1|lt=3\ a n d\ |x-1|lt=1.

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  20. The solution set of the inequation x^(2) + (a +b) x +ab lt 0, " wher...

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  21. The number of integral solutions of x^(2)-3x-4 lt 0, is

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