Баранова5 лет назад
Найдем х.
1) log3 x = -2;
x = 3^(-2);
x = 1/3^2;
x = 1/9;
2) log3 x = 6;
x = 3^6;
x = 9 * 9 * 9;
x = 81 * 9;
x = 729;
3) log3 x = 3;
x = 3^3;
x = 27;
4) log64 4 = x;
64^x = 4;
4^(4 * x) = 4;
4 * x = 1;
x = 1/4;
5) log3 1= x;
3^x = 1;
3^x = 3^0;
x = 0;
6) log2 16 = x;
2^x = 16;
2^x = 2^4;
x = 4;
7) logx 16 = 2;
x^2 = 16;
x^2 = 4^2;
x = 4;
8) logx = -3 * logx 5;
Нет корней.