Ответы на вопрос:
У= log8(5) = (1/3)*log2(5) x = log4(125) = (1/2)*3*log2(5) = (3/2)*log2(5) тогда: (2x-y)/y = = ((2/3)*log2(5) - (3/2)*log2(5))/((3/2)*log2(5)) = = (2/3)*(2/3) - 1 = 4/9 - 1 = -5/9 ответ: -5/9.
8^y=5 2^(3y)=5 3y=log(2)5 y=1/3*log(2)5 4^x=125 2^(2x)=125 2x=log(2)125 x=1/2*3*log(2)5=3/2*log(2)5 (2x-y)/x=2x/y-1=(2*3/2*log(2)5): (1/3*log(2)5-1=3log(2)5: 1/3*log(2)5-1=9-1=8
Популярно: Математика
-
Dizig11.05.2021 16:03
-
abramson22805.12.2021 02:37
-
taniysha3526.08.2021 21:40
-
Egoregoryts14.07.2020 14:17
-
santilo129.04.2021 01:51
-
EgorUmelii06.05.2023 02:02
-
Osdit09.09.2020 04:48
-
G8922.05.2020 01:19
-
romashka189908.04.2021 16:15
-
mashaaa9830.06.2020 18:01