Q107 / 155 · WBJEE 2022 · Mathematics

Let $p(x)$ be a polynomial with real co-efficients, $p(0)=1$ and $p^{\prime}(x) > 0$ for all $x \in \mathbb{R}$. Then

  • A
    $p(x)$ has at least two real roots
  • B
    $p(x)$ has only one positive real root
  • Correct answer
    C
    $\mathrm{p}(\mathrm{x})$ may have negative real root
  • D
    $p(x)$ has infinitely many real roots

Solution

$P(x)=0$ has exactly one negative real root.

Hence, the correct answer is option: 'C'.

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