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第四章:部分分式 Partial Fraction

第六章:角的形成及单位 Angles and Measurements

第十三章: 方程组 Simultaneous Equations

第十五章:二元一次不等式及线性规划 linear inequality in two variables and linear programming

17.5 对数方程式 Logarithmic Equations

17.5 Logarithmic Equations 对数方程式


Solve the following equations :
解下列方程式:

1.

log_{64} n^{\frac{1}{2}} = \frac{1}{3}

Answer:
16
2.

log_2[log_x(2x^2 - 16)] = 1

Answer:
4
3.

log(x^2 - x - 2) - log(x + 1) - log2 = 0

Answer:
4
4.

log_2t - log_t4 = 1

Answer:
4 , \frac{1}{2}
5.

x^{logx} = 10^6x

Answer:
1000, 0.01
6.

log_3 x = 9log_x 3

Answer:
27, \frac{1}{27}