Question

Let $F:R\to R$ be a thrice differentiable function. Suppose that $F\left(1\right)=0,F\left(3\right)=–4$ and $F^{\prime }\left(x\right)<0$ for all $x\in (\frac{1}{2},3)$ . Let $f\left(x\right)=xF\left(x\right)$ for all $x\in R$

• A. Option b missing
• B. Option a missing
• C. Option d missing
• D. Option c missing

Answer 1

The correct option is B Option a missing

Solution missing