ln(10x^{13})=65

解答

ln (10 x^{13}) = 65

x = \frac{e ^{5}}{13 10}

十进制

x = 124.32238 \dots

求解步骤

ln (10 x^{13}) = 65

使用对数运算法则

10 x^{13} = e^{65}

解

10 x^{13} = e^{65} : x = \frac{e ^{5}}{13 10}

x = \frac{e ^{5}}{13 10}

lo g_{4} (3 x) - 1 = lo g_{4} (- 2 x + 9)

ln (7 x + e) = - 6

2 ln (x) = ln (2) - 3 ln (2)

lo g_{2} (\frac{5}{x}) = 3

lo g_{4} (x + 1) - lo g_{4} (7 - 2 x) = 0