【根号(lg的平方3-lg9+1)*(lg根号27+lg8-lg根号1000)】/(lg0.3)*(lg1.2)
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/10 16:48:09
【根号(lg的平方3-lg9+1)*(lg根号27+lg8-lg根号1000)】/(lg0.3)*(lg1.2)
【根号(lg的平方3-lg9+1)*(lg根号27+lg8-lg根号1000)】/(lg0.3)*(lg1.2)
={根号(lg²3-lg3²+1)*[(1/2)*lg3³+lg2³-(1/2)*lg10³]}/[lg(3/10)*lg(12/10)]
={根号(lg²3-2lg3+1)*[(3/2)(lg3)+3*lg2-(3/2)*lg10]}/[lg(3/10)*lg(12/10)]
={根号(1-lg3)²*[(3/2)(lg3)+3lg2-(3/2)*1]}/[(lg3-lg10)*(lg12-lg10)],[1-lg3>0]
={(1-lg3)*(3/2)[lg3+2lg2-1]}/[(lg3-1)*(lg12-1)]
=-(3/2)[lg3+lg4-1]/(lg12-1)
=-(3/2)[lg3*4-1]/(lg12-1)
=-(3/2)[lg12-1]/(lg12-1)
=-3/2
={根号(lg²3-lg3²+1)*[(1/2)*lg3³+lg2³-(1/2)*lg10³]}/[lg(3/10)*lg(12/10)]
={根号(lg²3-2lg3+1)*[(3/2)(lg3)+3*lg2-(3/2)*lg10]}/[lg(3/10)*lg(12/10)]
={根号(1-lg3)²*[(3/2)(lg3)+3lg2-(3/2)*1]}/[(lg3-lg10)*(lg12-lg10)],[1-lg3>0]
={(1-lg3)*(3/2)[lg3+2lg2-1]}/[(lg3-1)*(lg12-1)]
=-(3/2)[lg3+lg4-1]/(lg12-1)
=-(3/2)[lg3*4-1]/(lg12-1)
=-(3/2)[lg12-1]/(lg12-1)
=-3/2
【根号(lg的平方3-lg9+1)*(lg根号27+lg8-lg根号1000)】/(lg0.3)*(lg1.2)
【根号(lg3的平方-lg9+1)*(lg根号27+lg8-lg根号1000)】/(lg0.3)*(lg1.2)
【根号lg9-lg9+lg10×(lg根号27+lg8-lg根号1000)】÷(lg0.3)(lg1.2)
根号下{(lg3)平方-lg9+1}乘以(lg根号下27+lg8-lg根号下1000)再整体除以lg0.3乘以lg1.2
(lg根号下27+lg8-lg根号下1000)/(1/2lg0.3+lg2)
(lg根号27+lg8-lg根号1000)/lg1、2
求(lg根号27+lg8-3lg根号10)/lg1.2
【lg(根号下27)+lg8-3(lg根号下10)】÷lg1.2=?
(lg根号27+lg8-3lg根号10)除以lg1.2
(lg根号27+lg8-3lg根号10)除以lg1.2
化简:(1)4lg2+3lg5-lg五分之一,(2)(lg根号下27+lg8-lg根号下1000)比上(lg1.2)
化简:(lg根号27+lg8-lg根号1000)/lg1.2