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love007007
@love007007
July 2023
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Розв'яжи рiвняння cos x = -1 x = (+/-)arccos (?) + 2пk, K є Z
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Kormash
cos x = -1
x = +- arccos (-1) + 2pik, k ∈ Z
Але за формулою це
х = pi+2pik, k ∈ Z
Фото формул прикріплено
2 votes
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Answers & Comments
x = +- arccos (-1) + 2pik, k ∈ Z
Але за формулою це
х = pi+2pik, k ∈ Z
Фото формул прикріплено