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liampayne29
@liampayne29
August 2022
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tg^2x-3tgx-4=0 помогите решить
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всезнайка07
tg^2x-3tgx-4=0
Замена: tgx=t
-3t-4=0
D=9+16=25 (
) >0
t1=
=-1
t2=4
затем решай простйешие уравнения
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Answers & Comments
Замена: tgx=t
D=9+16=25 (
t1=
t2=4
затем решай простйешие уравнения