PrincessQi @ 2020-10-05 09:51:25
求
的通项公式。
by PrincessQi @ 2020-10-05 09:52:57
其中
by _biscuitbc @ 2020-10-05 09:54:53
x1,x2是常数么?
by PrincessQi @ 2020-10-05 09:55:40
@Illusory_ 是
by 鏡音リン @ 2020-10-05 10:03:43
解不出来,wtcl
by _biscuitbc @ 2020-10-05 10:11:46
感觉我数学白学了..