零零ＢＯＢ
2009-09-12, 09:25
我在对一个函数进行积分后得出的结果是这样的，怎么才能化成数值型？？？25836995324529/3125000-49178197144/18575*log(2)-147534591432/92875*log(5)+49178197144/92875*log(4000+24187*exp(-3122829/100000))-84245305600/4968441*dilog(1+24187/4000*exp(-3122829/100000))+84245305600/4968441*dilog(28187/4000)-10457377/5191244526093750000*(-20302679190517952526000+245530450790528858873181*exp(-3122829/100000)+3900824385296400000000*log(1+24187/4000*exp(-3122829/100000))+23587309851791006700000*log(1+24187/4000*exp(-3122829/100000))*exp(-3122829/100000)-249826320000000000000*polylog(2,-24187/4000*exp(-3122829/100000))-1510637300460000000000*polylog(2,-24187/4000*exp(-3122829/100000))*exp(-3122829/100000)-8000000000000000000*polylog(3,-24187/4000*exp(-3122829/100000))-48374000000000000000*polylog(3,-24187/4000*exp(-3122829/100000))*exp(-3122829/100000)+8000000000000000000*polylog(3,-24187/4000)+48374000000000000000*polylog(3,-24187/4000)*exp(-3122829/100000))/(4000+24187*exp(-3122829/100000))+56374/108150927626953125*(20302679190517952526000-245530450790528858873181*exp(-3122829/100000)-3900824385296400000000*log(1+24187/4000*exp(-3122829/100000))-23587309851791006700000*log(1+24187/4000*exp(-3122829/100000))*exp(-3122829/100000)+249826320000000000000*polylog(2,-24187/4000*exp(-3122829/100000))+1510637300460000000000*polylog(2,-24187/4000*exp(-3122829/100000))*exp(-3122829/100000)+8000000000000000000*polylog(3,-24187/4000*exp(-3122829/100000))+48374000000000000000*polylog(3,-24187/4000*exp(-3122829/100000))*exp(-3122829/100000)-8000000000000000000*polylog(3,-24187/4000)-48374000000000000000*polylog(3,-24187/4000)*exp(-3122829/100000))/(4000+24187*exp(-3122829/100000))