Question 35: The maximum point of the function (y=x^{4}-2 x^{2}+2) is:

TXĐ \(D=\mathbb{R}\)

\(y^{\prime}=4 x^{3}-4 x . \text { Give } y^{\prime}=0 \Leftrightarrow 4 x^{3}-4 x=0 \Leftrightarrow\left[\begin{array}{l}x=0\\x=\pm1\end{array}\right\)

Variation table

So the function reaches its maximum at x = 0