化简 √x²+1/x²-2(0<x<1)

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化简 √x²+1/x²-2(0<x<1)
化简 √x²+1/x²-2(0<x<1)

化简 √x²+1/x²-2(0<x<1)
√x²+1/x²-2
=√(x-1/x)²
因为0<x<1
所以x-1/x<0
所以
√x²+1/x²-2
=√(x-1/x)²
= -(x-1/x)
=1/x-x

√x²+1/x²-2(0<x<1)
=√(x^2+1/x^2-2x*1/x)
=√(1/x-x)^2
=1/x-x