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1.(4/9)1/2+(-5.6)的0次方+0.125的-1/3次方等于()A3又3/2B3又2/3C2又6分之1D3又6分之12.若(1/4)的X次方=4根号2,则X等于()A5/4B-4/5C5/2D-5/23.log274乘LOG8
题目详情
1.(4/9)1/2+(-5.6)的0次方+0.125的-1/3次方等于( ) A3又3/2 B3又2/3 C2又6分之 1 D3又6分之1
2.若(1/4)的X次方=4根号2,则X等于( ) A5/4 B-4/5 C5/2 D-5/2
3.log27 4乘LOG8 9=( )
求高手回答,说下理由,
2.若(1/4)的X次方=4根号2,则X等于( ) A5/4 B-4/5 C5/2 D-5/2
3.log27 4乘LOG8 9=( )
求高手回答,说下理由,
▼优质解答
答案和解析
1.(4/9^1/2+(-5.6)的0次方+0.125的-1/3次方等于(B) A3又3/2 B3又2/3 C2又6分之 1 D3又6分之1
2/3+1+(125/1000)^(-1/3)=2/3+1+(1000/125)^(1/3)=5/3+2=11/3
2.若(1/4)的X次方=4根号2,则X等于(-5/4) A5/4 B-4/5 C5/2 D-5/2
(1/4)^X=4√2=(1/4)^(-5/4)
3.log27 4乘LOG8 9=( 4/9 )
log27(4)xlog8(9)=2lg2/3lg3x2lg3/3lg2=4/9
2/3+1+(125/1000)^(-1/3)=2/3+1+(1000/125)^(1/3)=5/3+2=11/3
2.若(1/4)的X次方=4根号2,则X等于(-5/4) A5/4 B-4/5 C5/2 D-5/2
(1/4)^X=4√2=(1/4)^(-5/4)
3.log27 4乘LOG8 9=( 4/9 )
log27(4)xlog8(9)=2lg2/3lg3x2lg3/3lg2=4/9
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