№4 нужно срочно решить, помогите!!!. Created by kill36rus. algebra-ru

№4 нужно срочно решить, помогите!!!...

kill36rus @kill36rus

September 2021 1 12 Report

№4 нужно срочно решить, помогите!!!

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sedinalana

Verified answer

1-4cos²=sin2x
sin²x+cos²x-4cos²x-2sinxcosx=0/cos²x
tg²x-2tgx-3=0
tgx=a
a²-2a-3=0
a1+a2=2 U a1*a2=-3
a1=-1 ⇒tgx=-1⇒x=-π/4+πn,n∈z
a2=3⇒tgx=3⇒x=arctg3+πk,k∈z

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srochno nado reshit a to matematik zadal i sam ne ponyal chto zadal no skazal chto

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Answers & Comments

Verified answer

srochno pomogite pozhalujsta1 skolko molekul soderzhitsya v 8 grammah oksida se

srochno pomogite pozhalujsta 1 skolko molekul soderzhitsya v 8 grammah oksida s

pomogite reshit 3 i 4 srochno

srochno nado reshit a to matematik zadal i sam ne ponyal chto zadal no skazal chto

ne poluchaetsya razlozhit na mnozhiteli dva vyrazheniya 1 sv kvadrate 16s 2 3ak

razlozhit na mnozhiteli y2 x2 6x 9

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