Let f : (–∞, 2] → (–∞, 4] be a function defined by f (x) = 4x – x 2 . Then f –1 (x) is :
Mathematics · JEE Advanced · NTA Exams — Sets, Relations and Functions
Let f : (–∞, 2] → (–∞, 4] be a function defined by
f (x) = 4x – x2. Then f –1 (x) is :
f (x) = 4x – x2. Then f –1 (x) is :
- \(2-\sqrt{4-x}\)
- \(2+\sqrt{4-x}\)
- \(\sqrt{4-x}\)
- \(\sqrt{4+x}\)
Answer
(A) 2- 4-x
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