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No. 18_Soal Asli UTBK 2019 Matematika Saintek



Himpunan nilai $x$ yang memenuhi pertidaksamaan $\frac{{{a}^{2x}}+8}{{{a}^{x}}} > 2{{a}^{x}}$, dengan $0 < a < 1$ adalah …
A. $\left\{ x\in R,x < \frac{3}{2}{{\log }_{a}}\left( 2 \right) \right\}$.
B. $\left\{ x\in R,x < \frac{2}{3}{{\log }_{a}}\left( 2 \right) \right\}$.
C. $\left\{ x\in R,x > \frac{3}{2}{{\log }_{a}}\left( 2 \right) \right\}$.
D. $\left\{ x\in R,x > 2{{\log }_{a}}\left( \frac{3}{2} \right) \right\}$.
E. $\left\{ x\in R,x < 2{{\log }_{a}}\left( \frac{3}{2} \right) \right\}$.

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