【4】n=6のとき
s+1/s=10/3,b=1/3,(b+b^2)^1/2=2/3
m≧1
m=5の場合を掲げる.
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n=6 → s+1/s=10/3 R=1 R+d-r=10r→ d=11r-1 d^2=1-10/3・r+r^2に代入 → r=7/45,d=32/45 R-d-r=1-32/45-7-45=6/45 =================================== α=-1+70/45=25/45 β=1-6/45=39/45 α+β=64/45=2880/2025 1+αβ=3000/2025 a~2+2・25/24a+1=0 a=-25/24±7/24 a=-18/24=-3/4 w=(z+a)/(az+1)=(z-3/4)=(-3z/4+1))=(4z-3)/(4-3z) 検算 z=(1/3,0)→12z-9=4-3z→z=β z=(-1/3,0)→12z-9=-4+3z→z=α ===================================