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safrinasofia
@safrinasofia
July 2022
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Помогите с логарифмическим небольшим уравнением (вложение)
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ShirokovP
Verified answer
Log3 (x^2) - 3log3 (x) + 2 = 0
log3 (x) = t
t^2 - 3t + 2 = 0
D = 9 - 8 = 1
t1 = ( 3 + 1)/2 = 2
t2 = ( 3 - 1)/2 = 1
log3 (x) = 2
x = 3^2
x = 9
log3(x) = 1
x = 3^1
x = 3
Ответ
9; 3
1 votes
Thanks 1
safrinasofia
Привет, спасибо! !!а ты триганометрию решаешь?
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Answers & Comments
Verified answer
Log3 (x^2) - 3log3 (x) + 2 = 0log3 (x) = t
t^2 - 3t + 2 = 0
D = 9 - 8 = 1
t1 = ( 3 + 1)/2 = 2
t2 = ( 3 - 1)/2 = 1
log3 (x) = 2
x = 3^2
x = 9
log3(x) = 1
x = 3^1
x = 3
Ответ
9; 3