xxlovemary 幼苗
共回答了17个问题采纳率:94.1% 举报
1年前
已知等差数列{an}的前n项和为sn,a8=2,s8=-68
1年前2个回答
1年前1个回答
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I was doing my homework while my parents were ______ (cook)dinner.
11个月前
A person who has never tasted bitter won’t know ______ sweet is.
1年前
-The final exam is coming. _______ I worried about it, _______ I could sleep.
1年前
求定积分∫(下限为-2,上限为-√2)dx/[x√(x²-1)]等于多少?
1年前
若随机事件与B互不相容,p(A)=0.1, p(AUB)=0.3, 则 p(B)=?
1年前