Question

若a=2^0.5，b=log_π3，c=log₂0.5，則（　�。�

A．a(chǎn)＞b＞c

B．b＞a＞c

C．c＞a＞b

D．b＞c＞a

Answer 1

分析：利用指數(shù)函數(shù)和對(duì)數(shù)函數(shù)的性質(zhì)即可得出．

解答：解：∵2^0.5＞2⁰=1，0＜log_π3＜log_ππ=1，log₂0.5＜log₂1=0，
∴a＞b＞c．
故選A．

點(diǎn)評(píng)：熟練掌握指數(shù)函數(shù)和對(duì)數(shù)函數(shù)的性質(zhì)是解題的關(guān)鍵．