Найдите сумму бесконечно убывающей геометрической прогрессии: 3; -1; 1/3;….. . Created by none6. algebra-ru

3;….. ...

July 2022 2 13 Report

Найдите сумму бесконечно убывающей геометрической прогрессии: 3; -1; 1/3;…..

anel7776

Ответ:

$\{b_{n}\}:\ \ 3\ ;\ -1\ ;\ \dfrac{1}{3}\ ;\ ...\\\\\\q=\dfrac{b_2}{b_1}=\dfrac{-1}{3}=-\dfrac{1}{3}\ \ ,\ \qquad (\ proverim:\ q=\dfrac{b_3}{b_2}=\dfrac{1/3}{-1}=-\dfrac{1}{3}\ )\\\\\\S=\dfrac{b_1}{1-q}=\dfrac{3}{1-(-\frac{1}{3})}=\dfrac{3}{1+\frac{1}{3}}=\dfrac{3}{\frac{4}{3}}=\dfrac{9}{4}=2,25$

1 votes Thanks 1

NNNLLL54

Verified answer

Решение и ответ на фото

4 votes Thanks 3

Answers & Comments

Verified answer

kater proplyl po techeniyu 40 km za 2 ch a protiv techeniya na 5 km bolshe za 3 ch

oformit i reshit v vide zadachiopredelite nachalnyjobem gaza sovershivshegorab

vychislite skolko oksida kalciya obrazuetsya pri razlozhenii 70 g karbonata kalc

sostavte uravneniya reakcii dlya cepochki himicheskih prevrashenij mg mgo mgoh2

samymi izvestnymi soedineniyami shyolochnozemelnyh metallov yavlyayutsya gashenaya i nega

shelochnye metally na vozduhe v vode s galogenami proyavlyayut vysokuyu aktivnost

razlozhite na mnozhiteli x 4a

treugolnik abc v gomotetii otobrazhaetsya v treugolnik a1b1c1 ab 5 sm bc 15

v geometricheskoj progressii bn izvestnochto q 2 s3 635a najdite pervyj ch

bn geometricheskaya progressiya pervyj chlen raven 7a znamenatel 2 najdit

рекомендуемые вопросы

Helpful Links

Helpful Social