log_{10}(x)= 4/5

解答

lo g_{10} (x) = \frac{4}{5}

x = 1 0^{\frac{4}{5}}

十进制

x = 6.30957 \dots

求解步骤

lo g_{10} (x) = \frac{4}{5}

使用对数运算法则

x = 1 0^{\frac{4}{5}}

lo g_{2} (x) = \frac{ln ( x )}{ln ( 2 )}

ln (- 7 x - 4) = 3

lo g_{\frac{1}{3}} (4 + 5 x) = - 2

0 = - 6 lo g_{9} (x + 9)

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