Question

Tính:

a) \({\log _2}{2^{ - 13}};\)               

b) \(\ln {e^{\sqrt 2 }};\)                  

c) \({\log _8}16 - {\log _8}2;\)                     

d) \({\log _2}6.{\log _6}8.\)

Answer 1

a: \(log_22^{-13}=-13\)

b: \(lne^{\sqrt{2}}=\sqrt{2}\)

c: \(log_816-log_82=log_8\left(\dfrac{16}{2}\right)=log_88=1\)

c: \(log_26\cdot log_68=log_28=3\)