Question

The function $f \left(x\right) = e^{x+1} + 1 \left(4x^{2}- 16x +11\right)$ is :

• A. decreasing in $\left(-\infty, -\frac{5}{2}\right) \cup \left(\frac{1}{2}, \infty\right)$
• B. decreasing in $\left(-\infty, -\frac{1}{2}\right) \cup \left(\frac{5}{2}, \infty\right)$
• C. increasing in $\left(-\infty, -2\right) \cup \left(2, \infty\right)$
• D. increasing in $\left(-\infty, -\frac{1}{2}\right) \cup \left(\frac{5}{2}, \infty\right)$

Answer 1

Answer: (D)

Correct answer is (d) increasing in $\left(-\infty, -\frac{1}{2}\right) \cup \left(\frac{5}{2}, \infty\right)$