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Black Advanced Problems in Mathematics
Exam
Black Advanced Problems in Mathematics
Subject
Mathematics
Chapter
Indefinite and Definite Integration

Black Advanced Problems in Mathematics · Mathematics · Indefinite and Definite Integration

f(x) = 2x - ^ -1 x - (x + 1+x^2 )

f(x)=2x−tan⁡−1x−ln⁡(x+1+x2)f(x) = 2x - \tan^{-1} x - \ln(x + \sqrt{1+x^2})

Options

  1. Astrictly increases ∀x∈R\forall x \in R
  2. Bstrictly increases only in (0,∞)(0, \infty)
  3. Cstrictly decreases ∀x∈R\forall x \in R
  4. Dstrictly decreases in (0,∞)(0, \infty) and strictly increases in (−∞,0)(-\infty, 0)

Correct answer

A. strictly increases ∀x∈R\forall x \in R

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