推 bluealane:ln 140.113.151.87 03/22
推 TACO17:dt改成d(t + sint) 218.167.174.91 03/22
推 Blulala:ln|t + sint|+c 211.74.191.216 03/22
推 fuky:阿多幫你解一下，(1+cost)dt=d(t+sint)， 210.71.255.37 03/22
推 ADONISLi:多謝旺哥 61.229.133.183 03/22
1 + cost
∫ --------- dt
t + sint
謝謝~
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