考點(diǎn):對(duì)數(shù)的運(yùn)算性質(zhì),有理數(shù)指數(shù)冪的化簡(jiǎn)求值
專題:函數(shù)的性質(zhì)及應(yīng)用
分析:(1)直接利用指數(shù)的運(yùn)算法則求解(
×
)
6+
()-(-2008)
0;
(2)利用對(duì)數(shù)的運(yùn)算法則求解lg5lg20+(lg2)
2;
(3)利用對(duì)數(shù)的運(yùn)算法則求解(log
32+log
92)•(log
43+log
83)+(log
33
)
2+ln
-lg1.
解答:
解:(1)(
×
)
6+
()-(-2008)
0=4×9+2-1
=37
(2)lg5lg20+(lg2)
2=lg5(2lg2+lg5)+(lg2)
2=(lg2+lg5)
2=1.
(3)(log
32+log
92)•(log
43+log
83)+(log
33
)
2+ln
-lg1
=(log
32+
log
32)•(
log
23+
log
23)+(
log
33)
2+1-0
=
×++1=
.
點(diǎn)評(píng):本題考查指數(shù)與對(duì)數(shù)的運(yùn)算法則的應(yīng)用,考查計(jì)算能力.