1500(1+0.5)(1-x)(1-x)=1500+500怎样算
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1500(1+0.5)(1-x)(1-x)=1500+500怎样算1500(1+0.5)(1-x)(1-x)=1500+500怎样算1500(1+0.5)(1-x)(1-x)=1500+500怎样算1
1500(1+0.5)(1-x)(1-x)=1500+500怎样算
1500(1+0.5)(1-x)(1-x)=1500+500怎样算
1500(1+0.5)(1-x)(1-x)=1500+500怎样算
1500×1.5(1-x)²=2000
(1-x)²=8/9
1-x=±√(8/9)=±2(√2)/3
x=1±2(√2)/3
即x1=(3+2√2)/3,x2=(3-2√2)/3
近似值是
x1=1.943,x2=0.0572
1500*1.5*(1-x)*(1-x)=2000?
约分后
(1-x)(1-x)=8/9
1-x=正负二倍根号二/3
x=1-+(2根号2/3)
1500(1+0.5)(1-x)(1-x)=1500+500
(1-x)^2=8/9
1-x=正负0.94
x1=1+0.94
x1=1.94
x2=1-0.94
x2=0.06
x/x+(1-x)/x-1/x
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