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47ranono
@47ranono
August 2021
1
11
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алгебра. 10 класс. логарифмы. 40 баллов,могу дать и больше,если сможете помочь.
заданиие на фото. №127 б) и №129 а),б)
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oganesbagoyan
Verified answer
127 б)
Loq_14 7 =a ; Loq_14 5 =b.
---------------
Loq_175 56 ?
Loq_175 56 = Loq_14 56/Loq_14 175 = Loq_56*7²/7²/(Loq_14 7 +Loq_14 25) =
Loq_14 14³/7²/(Loq_14 7 + 2Loq_14 5) =(3-2Loq_14 7)/(a+2b) =
= (3 -2a)/(a+2b).
---------------
129 а)
Log_a b =2.
---------------
Loq_a² a²b² - ?
Loq_a² a²b² = Loq_a² (ab)² =Loq_ a ab = Loq_ a a +Log_a b =1+2 =
3.
127 б)
Log_a b =3.
---------------
Loq_a³ a³b³ - ?
Loq_a³ a³b³ =
Loq_a³ (ab)³ =Loq_ a ab = Loq_ a a +Log_a b =1+3 =
4
.
************
удачи !
2 votes
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47ranono
Спасибо
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Answers & Comments
Verified answer
127 б)Loq_14 7 =a ; Loq_14 5 =b.
---------------
Loq_175 56 ?
Loq_175 56 = Loq_14 56/Loq_14 175 = Loq_56*7²/7²/(Loq_14 7 +Loq_14 25) =
Loq_14 14³/7²/(Loq_14 7 + 2Loq_14 5) =(3-2Loq_14 7)/(a+2b) =
= (3 -2a)/(a+2b).
---------------
129 а) Log_a b =2.
---------------
Loq_a² a²b² - ?
Loq_a² a²b² = Loq_a² (ab)² =Loq_ a ab = Loq_ a a +Log_a b =1+2 =3.
127 б) Log_a b =3.
---------------
Loq_a³ a³b³ - ?
Loq_a³ a³b³ =Loq_a³ (ab)³ =Loq_ a ab = Loq_ a a +Log_a b =1+3 =4.
************
удачи !