化简 log_{2}(0.5)

解答

化简

lo g_{2} (0.5)

- 1

求解步骤

lo g_{2} (0.5)

0.5 = \frac{5}{10}

= lo g_{2} (\frac{5}{10})

\frac{5}{10} = 2^{- 1}

= lo g_{2} (2^{- 1})

使用对数计算法则:

lo g_{a} (a^{b}) = b

= - 1

6 x^{2} + 7 x = 11

s im pl i f y (13 m^{4} + 2) + (m^{4} n^{2} + 2 - 2 m^{4}) - (- 13 m^{2} n^{3} + 5 m^{4})

22500 - 740 x = 15200 + 1500 x

f a c t or (x + 8)^{2} - 4

\frac{x}{4} = 12