Question

(^{\(\dfrac{-1}{2}\)})¹⁹ và (\(\dfrac{1}{4}\))⁹

Answer 1

\(\left\{{}\begin{matrix}\left(-\dfrac{1}{2}\right)^{19}< 0\\\left(\dfrac{1}{4}\right)^9>0\end{matrix}\right.\)

Suy ra:\(\left(-\dfrac{1}{2}\right)^{19}< \left(\dfrac{1}{4}\right)^9\)

Answer 2

\(\Rightarrow\left\{{}\begin{matrix}\left(\dfrac{-1}{2}\right)^{19}< 0\\\left(\dfrac{1}{4}\right)^9>0\end{matrix}\right.\)

\(\Rightarrow\left(\dfrac{-1}{2}\right)^{19}< \left(\dfrac{1}{4}\right)^9\)

Vậy ......

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