8^(-1/3)+log3(1/27)+log6(5)*[log5(2)+log5(3)]+10^lg3=?
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8^(-1/3)+log3(1/27)+log6(5)*[log5(2)+log5(3)]+10^lg3=?
![8^(-1/3)+log3(1/27)+log6(5)*[log5(2)+log5(3)]+10^lg3=?](/uploads/image/z/15944176-64-6.jpg?t=8%5E%28-1%2F3%29%2Blog3%281%2F27%29%2Blog6%285%29%2A%5Blog5%282%29%2Blog5%283%29%5D%2B10%5Elg3%3D%3F)
8^(-1/3)+log3(1/27)+log6(5)*[log5(2)+log5(3)]+10^lg3
=1/2 + (-3) + log6(5) * log5(2*3) + 3
=1/2 - 3 + 1 +3
=3/2 =1.5
注意用到了对数的几个规律,
1,基本性质 a^(log(a)b)=b
2,换底公式:log(a)(N)=log(b){N}÷log(b){a}
=1/2 + (-3) + log6(5) * log5(2*3) + 3
=1/2 - 3 + 1 +3
=3/2 =1.5
注意用到了对数的几个规律,
1,基本性质 a^(log(a)b)=b
2,换底公式:log(a)(N)=log(b){N}÷log(b){a}
log5 1/3*log3 6*log6 X=2,则x等于多少
log2(3)*log3(4)*log4(5)*log5(6)*log6(7)*log7(8)=?
log2(2)+log5(1)-log1/3(1/27)+[3^log3(5)]^2+3^-log3(2)=?
为什么1/log5(3)等于log3(5) ?
log2(3)+log3(4)+log4(5)+log5(6)+log6(7)+log7(8)
计算log2 6-log2 3,lg5+lg2,log5 3+log5 1/3,log3 5-log3 15
计算:log3 8×log4 27+5^(1-log5 2)+(27/8)^-(2/3)+sin3π/2
log3(2)*log5(3)*log8(5)
log2为底3*log3为底4*log4为底5log5底6*log6底7*log7底8=
若log5为底1/3为真数*log3为底6为真数*log6为底x为真数=2.则x=
(1)1/2lg3+3lg√2-lg√6/5=?(2)log5(底数)10(真数)-log5(底数)2/√5(真数)=?
2007*log5(1)+log4(27)*log3(4)