The function defined by f ( x ) = ( x + 2) e – x is
Mathematics · JEE Advanced · NTA Exams — Limit, Continuity and Differentiability
The function defined by f(x) = (x + 2)e–x is
- decreasing for all x
- decreasing in (–∞, –1) and increasing in (–1, ∞)
- increasing for all x
- decreasing in (–1, ∞) and increasing in (–∞, –1)
Answer
(B) decreasing in (– ∞ , –1) and increasing in (–1, ∞ )
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