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TS EAMCET · Maths · Functions

If x represents the greatest integer x, then the range of the real valued function fx=1x2+x-2 is

  1. A (-,0]12,
  2. B 0,12
  3. C -,0[2,)
  4. D (0,2]
Verified Solution

Answer & Solution

Correct Answer

(B) 0,12

Step-by-step Solution

Detailed explanation

Given: fx=1x2+x-2 Here, fx is defined for x2+x-2>0 Put x=t, then t2+t-2>0 ⇒t-1t+2>0 ⇒t∈-∞,-2∪1,∞ ⇒x∈-∞,-2∪1,∞ ⇒x∈-∞,-2∪[2,∞) Now, x≥2 ⇒x≥2…
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