おすすめ7桁

あげていってください

>>2
exp((2iπ)/11)=cos((2π)/11)+isin((2π)/11)=

-1/10
+1/40(-1+sqrt(5)+isqrt(10+2sqrt(5)))root(5)(-11/4(89+25sqrt(5)+(45sqrt(5-2sqrt(5))-5sqrt(5+2sqrt(5)))i))
+1/40(-1+sqrt(5)+isqrt(10+2sqrt(5)))root(5)(-11/4(89-25sqrt(5)+(45sqrt(5+2sqrt(5))+5sqrt(5-2sqrt(5)))i))
+1/40(-1+sqrt(5)-isqrt(10+2sqrt(5)))root(5)(-11/4(89+25sqrt(5)-(45sqrt(5-2sqrt(5))-5sqrt(5+2sqrt(5)))i))
+1/40(-1+sqrt(5)-isqrt(10+2sqrt(5)))root(5)(-11/4(89-25sqrt(5)-(45sqrt(5+2sqrt(5))+5sqrt(5-2sqrt(5)))i))

+i/10sqrt(55
-5root(5)(-11/4(89+25sqrt(5)+(45sqrt(5-2sqrt(5))-5sqrt(5+2sqrt(5)))i))
-5/4(-1+sqrt(5)-isqrt(10+2sqrt(5)))root(5)(-11/4(89-25sqrt(5)+(45sqrt(5+2sqrt(5))+5sqrt(5-2sqrt(5)))i))
-5root(5)(-11/4(89+25sqrt(5)-(45sqrt(5-2sqrt(5))-5sqrt(5+2sqrt(5)))i))
-5/4(-1+sqrt(5)+isqrt(10+2sqrt(5)))root(5)(-11/4(89-25sqrt(5)-(45sqrt(5+2sqrt(5))+5sqrt(5-2sqrt(5)))i)))