已知lg2=a,lg3=b,求下列数值(急!)已知lg2=a,lg3=b,求下列数值.(1)lg6(2)log3(3为底数)4(3)log2(2为底数)12(4)lg3/2

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已知lg2=a,lg3=b,求下列数值(急!)已知lg2=a,lg3=b,求下列数值.(1)lg6(2)log3(3为底数)4(3)log2(2为底数)12(4)lg3/2

已知lg2=a,lg3=b,求下列数值(急!)已知lg2=a,lg3=b,求下列数值.(1)lg6(2)log3(3为底数)4(3)log2(2为底数)12(4)lg3/2
已知lg2=a,lg3=b,求下列数值(急!)
已知lg2=a,lg3=b,求下列数值.
(1)lg6
(2)log3(3为底数)4
(3)log2(2为底数)12
(4)lg3/2

已知lg2=a,lg3=b,求下列数值(急!)已知lg2=a,lg3=b,求下列数值.(1)lg6(2)log3(3为底数)4(3)log2(2为底数)12(4)lg3/2
(1)lg6=lg2+lg3=a+b
(2)log3(3为底数)4
=2log3(3为底数)2
=2lg2/lg3
=2a/b
(3)log2(2为底数)12
=log2(2为底数)4+log2(2为底数)3
=2+log2(2为底数)3
=2+lg3/lg2
=2+b/a
(4)lg3/2=lg3-lg2=b-a

已知lg2=a,lg3=b,求下列数值。
(1)lg6 =lg2+lg3=a+b
(2)log3(3为底数)4
=2*log3 (2)=2lg2/lg3=2a/b
(3)log2(2为底数)12
=log2(3)+2
=lg3/lg2+2
=b/a +2
(4)lg3/2
=lg3/lg2
=b/a