Question

log3

9

100

+2log310=（　　）

A．0

B．1

C．2

D．3

Answer 1

分析：根據(jù)對數(shù)的運算性質(zhì)即可得質(zhì)可得，log3

9

100

+2log310=+2log₃10=2-2log₃10+2log₃10，可求

解答：解：根據(jù)對數(shù)的運算性質(zhì)可得，log3

9

100

+2log310=log₃9-log₃100+2log₃10
=2-2log₃10+2log₃10
=2
故選C

點評：本題主要考查了對數(shù)的運算性質(zhì)的應(yīng)用，屬于基礎(chǔ)試題