有个公式x^2-y^2=(x+y)(x-y)
2002^2* x^2-2003*2001x-1=0
2002^2* x^2-(2002^2-1)x-1=0
方程一因式分解(2002^2x+1)(x-1)=0
r=1
2001x平方-2002x+1=0的较小值为s
方程二因式分解(2001x-1)(x-1)=0
s=1/2001
r-s=2000/2001
有个公式x^2-y^2=(x+y)(x-y)
2002^2* x^2-2003*2001x-1=0
2002^2* x^2-(2002^2-1)x-1=0
方程一因式分解(2002^2x+1)(x-1)=0
r=1
2001x平方-2002x+1=0的较小值为s
方程二因式分解(2001x-1)(x-1)=0
s=1/2001
r-s=2000/2001