在计算定积分时,在用exp(1)作为上限时出现离谱答案。
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>> int(sin(log(x)),1,exp(1))
ans =
1/2 - (3060513257434037*2^(1/2)*cos(pi/4 + log(3060513257434037/1125899906842624)))/2251799813685248
>> int(x*log(x),1,exp(1))
ans =
(9366741398929500034245406117369*log(3060513257434037/1125899906842624))/2535301200456458802993406410752
想请问下这是为什么?怎么解决?
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