为啥�直接求面积和套定积分公式求出来的答案不一样啊,哪个大神可以用定积分求一下,让�看看�哪里错了吗? 知乎 Template




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tomski为啥�直接求面积和套定积分公式求出来的答案不一样啊,哪个大神可以用定积分求一下,让�看看�哪里错了吗? 知乎 coloring