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JEE Mains · Maths · STD 11 - 4.2 Quadratic equations and inequations

સમીકરણ \(x|x-1|+|x+2|+a=0\) ને બરાબર એક જ વાસ્તવિક બીજ હોય, તેવા તમામ \(a \in R\) નો ગણ \(........\) છે.

  1. A \((-6,-3)\)
  2. B \((-\infty, \infty)\)
  3. C \((-6, \infty)\)
  4. D \((-\infty,-3)\)
Verified Solution

Answer & Solution

Correct Answer

(B) \((-\infty, \infty)\)

Step-by-step Solution

Detailed explanation

\(f(x)=x|x-1|+|x+2|\) \(x|x-1|+|x+2|+a=0\) \(x|x-1|+|x+2|=-a\) All values are increasing.
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