问题标题:
loga2+loga2分之1log318-log322log525-3log264已知lg2=alg3=b求下列各式的值1.lg62.log343.log2124.lg2分之3已知X的对数,求X1.lgx=lga+lgb2.logax=logam-logan3.lgx=31gn-lgm4.logax=2分之1logab-logac呵呵不好意思
问题描述:
loga2+loga2分之1
log318-log32
2log525-3log264
已知lg2=alg3=b求下列各式的值
1.lg62.log343.log2124.lg2分之3
已知X的对数,求X
1.lgx=lga+lgb2.logax=logam-logan
3.lgx=31gn-lgm4.logax=2分之1logab-logac
呵呵不好意思最后问一题
2log510+log50.25
孟猛回答:
loga2+loga1/2=loga(2×1/2)=loga1=0log318-log32=log3(18÷2)=log39=log33^2=2log33=22log525-3log264=2lg25/lg5-3lg64/lg2=2lg5^2/lg5-3lg2^6/lg2=2×2lg5/lg5-3×6lg2/lg2=4-18=-14已知lg2=alg3...
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