(10793861*log(1 - exp(221/100)))/1000000 - (48841*polylog(2,
exp(221/100)))/5000 + (221*polylog(3, exp(221/100)))/50 +
2385443281/300000000))/pi^4
将其化简，则
η
max
=
(10793861*log(1 - exp(221/100)))/1000000 - (48841*polylog(2,
exp(221/100)))/5000 + (221*polylog(3, exp(221/100)))/50 +
2385443281/300000000))/pi^4
将其化简，则
η
max
=