数学题，难度适中，

Answer 1

换元

Answer 2

dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

追问

糟蹋你的采纳率

追答

fffffffffffffffffffffffffffff

追问

你是人类吗

难道你是机器人？

不会说人话

追答

缀双双双双双双双双双双双双双双双双双双双双双双