已知log2[log4(log3x)]=log3[log5(log2y)]=0,求4更号x-y^1/5
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已知log2[log4(log3x)]=log3[log5(log2y)]=0,求4更号x-y^1/5已知log2[log4(log3x)]=log3[log5(log2y)]=0,求4更号x-y^1
已知log2[log4(log3x)]=log3[log5(log2y)]=0,求4更号x-y^1/5
已知log2[log4(log3x)]=log3[log5(log2y)]=0,求4更号x-y^1/5
已知log2[log4(log3x)]=log3[log5(log2y)]=0,求4更号x-y^1/5
log2[log4(log3x)]=0
log4(log3x)=1
log3x=4
x=3^4=81
同理
log5(log2y)=1
log2y=5
y=32
所以原式=4×9-2=34
根号下则x²-1>=,x²>=1
1-x²>=0,x²<=1
同时成立则x²=1
x=±1
分母x+1≠0
所以x=1
所以y²=(0+0)÷2+4=4
y=±2
所以x+y=-1或3
sorry!
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