Question

log3 √7*(8x+1) = 6
Решить логарифмическое уравнение

Answer 1

$log_{3}( \sqrt{7(8x + 1} ) = 6 \\ \frac{1}{2} \times log_{3}(7(8x + 1)) = 6 \\ log_{3}(7) + log_{3}(8x + 1) = 12 \\ log_{3}(8x + 1) = 12 - log_{3}(7) \\ 8x + 1 = \frac{{3}^{12} }{7 } \\ \ x = \frac{(\frac{{3}^{12} }{7 } - 1 )}{8} \\ x = 66430$