分からない問題はここに書いてね 470

e + 2π - 9
> 8 * ( 1/2 - 1/3 * (1/2)^3+ (1/5)* (1/2)^5 - (1/7)*(1/2)^7 + (1/9)* (1/2)^9-1/11*(1/2)^11+ 1/3 - 1/3*(1/3)^3 + (1/5)*(1/3)^5 -(1/7)*(1/3)^7 ) + 2 + 1/2 + 1/6 + 1/24 + 1/120 + 1/720 - 9
= 245227 / 215550720