Решить уравнение: cos^2(pi-x)+8cos(pi+x)+7=0. Created by lirooy08. matematika-ru

Решить уравнение: cos^2(pi-x)+8cos(pi+x)+7=0...

August 2022 1 27 Report

Решить уравнение: cos^2(pi-x)+8cos(pi+x)+7=0

Answers & Comments

rudlarpar Cos^2(pi-x)+8cos(pi+x)+7=0 cos^2 x-8cosx+7=0 cosx=t t^2 -8t+7=0 D=64-28=36 t=(8+6)/2=7 t=(8-6)/2=1 cosx=7(нет решений, т.к. cos не может быть больше 1) cosx=1 x=2pin

1 votes Thanks 2

elektrodvizhushuyu silu istochnika energii chasto opredelyayut kak summu padenij napryazh

Answer

lirooy08 October 2021 | 0 Ответы

v kube abcda1b1c1d1 provedena ploskost cpq gde p seredina rebra bb1 a q c

Answer

Answers & Comments

pryamougolnyj treugolnik s katetami 3sm i 4sm vrashaetsya okolo osi parallelnoj

h 320 2 0808 5h 055

nadeyus pomozhete reshit

reshit neravenstvo log 1 x3x2 xlt2

2 2 reshit uravnenie sin4 xcos2x cos4 xsin2xcos2x

elektrodvizhushuyu silu istochnika energii chasto opredelyayut kak summu padenij napryazh

v kube abcda1b1c1d1 provedena ploskost cpq gde p seredina rebra bb1 a q c

рекомендуемые вопросы

Helpful Links

Helpful Social