13^x>17^x помогите плиз. Created by akira15. algebra-ru

13^x>17^x помогите плиз...

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$13^x\ \textgreater \ 17^x \\ 1\ \textgreater \ \dfrac{17^x}{13^x} \\ ( \dfrac{17}{13} )^0\ \textgreater \ (\dfrac{17}{13})^x \\ x\ \textless \ 0$

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MizoriesKun

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13ˣ>17ˣ

13ˣ 17ˣ
------- > ----------
17ˣ 17ˣ

13
( ----)ˣ > 1
17

13 13
( ----)ˣ  > (-------)⁰
  17 17

так как 13/17 <1 при решении меняем знак на противоположный

х < 0

x∈(-∞;0 )

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Answers & Comments

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