$-e^{\frac{-\pi}{4}}$

$\sqrt{2} e^{\frac{\pi}{4}}$

$\sqrt{2} e^{\frac{-\pi}{4}}$

$e^{\frac{-\pi}{4}}$

$a+\sqrt{2}$

$a+\frac{1}{\sqrt{2}}$

$a-\frac{1}{\sqrt{2}}$

$a-\sqrt{2}$

$P(-1)$ is not minimum of $P(x)$, but $P(1)$ is the maximum of $P(x)$

$P(-1)$ is minimum of $P(x)$, but $P(1)$ is not the maximum of $P(x)$

Neither $P(-1)$ is the minimum nor $P(1)$ is the maximum of $P(x)$

$P(-1)$ is the minimum and $P(1)$ is the maximum of $P(x)$

2

3

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