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fsfwtggh
@fsfwtggh
July 2022
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3tgx=ctgx помогите пж
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nKrynka
Решение
3tgx=ctgx
3tgx = 1/tgx умножим на tgx
3tg
²x = 1
tg²x = 1/3
1) tgx = - 1/√3
x = arctg(-1/√3) + πk, k ∈Z
x₁ = - π/6 +
πk, k ∈Z
2) tgx = 1/
√3
x =
arctg(1/√3) + πn, n ∈Z
x
₂ = π/6 +
πn, n ∈Z
Ответ:
x₁ = - π/6 + πk, k ∈Z; x₂ = π/6 +
πn, n ∈Z
6 votes
Thanks 5
fsfwtggh
а почему вдруг tg^2x стал ?
nKrynka
3tgx*tgx = 3tg²x
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Answers & Comments
3tgx=ctgx
3tgx = 1/tgx умножим на tgx
3tg²x = 1
tg²x = 1/3
1) tgx = - 1/√3
x = arctg(-1/√3) + πk, k ∈Z
x₁ = - π/6 + πk, k ∈Z
2) tgx = 1/√3
x = arctg(1/√3) + πn, n ∈Z
x₂ = π/6 + πn, n ∈Z
Ответ: x₁ = - π/6 + πk, k ∈Z; x₂ = π/6 + πn, n ∈Z