Решить показательное неравенство: (1/3)^x+2+(1/3)^-x-3

3)^-x-3

Verified answer

Ответ на фото/////////////////

1 votes Thanks 7

армения20171 (1/3)^(x+2)+1/3^(-x-3)≤4
x€(-oo;+oo)
(1/3)^x *1/9+1/(1/3)x*(1/3)³≤4
(1/3)^x=t>0
t/9+27/t-4≤0

t²+243-36t≤0

t²-36t+243≤0
D1=324-243=81=9²
t=18±9
t1=27;t2=9
t€[9;27]
{(1/3)^x≤27;(1/3)^x≤(1/3)^(-3);x≥-3
{(1/3)^x≥9;(1/3)^x≥(1/3)^(-2);x≤-2

=>x€[-3;-2]

1 votes Thanks 2

Answers & Comments

Verified answer

chislovoj ryad iz 10 chisel zadaetsya generatorom sluchajnyh chisel v diapazone ot 1 d7ab7bf564e3ad050d0070eb2599f76d6 29888

pomogite opredelit padezh otricatelnyh mestoimenij valek nichego ne otvetil ma

(9^11)^2*23...

kakimi chlenami predlozheniya yavlyayutsya vydelennye slova v dannyh predlozheniyah chel

644 otvet zhelatelno obyknovennoj drobyu a ne desyatichnoj

84...

ya napisala vorochilsya ya ponyala v chyom oshibka cha sha pishi s bukvoj a no ne

nado obyasnit pochemu v slove gonchih sobak ne pishetsya myagkij znak i privesti

v slove net nitok suffiks ok ili eto ne suffiks a okonchanie v nachalnoj f

kak mozhno perenesti slovo volejbolist volej bolist mozhno

рекомендуемые вопросы

Helpful Links

Helpful Social