共回答了167个问题采纳率:85%
共回答了55个问题
已知函数f(x)=cos^4 x-2sin x cos x-sin^4 x
2024-05-031个回答
已知函数f(x)=sin( - x)coswx+cos已知函数f(x)=sin(pai-wx)coswx+cos平方wx
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已知函数f(x)=2cos x sin(x+pai/6)-sin^2x+cos^2x.
2024-05-032个回答
已知函数Y=2sin^X+2sinXcosX-5cos^X 已知函数Y=2sin^X+2sinXcosX-5cos^X,
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已知函数f(x)=x2+(sinα-2cosα)x+1是偶函数 则sinαcosα=
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sin cos三角函数题解已知α为锐角 sinα=3cosα 求sinαcosα
2024-05-032个回答
刚学完三角函数,1.已知COS∝/(1+SIN∝)=A,SIN∝/(1+COS∝)=B,A-B=k(COS∝-SIN∝)
2024-05-031个回答
would you please tell me _ a.what to do b.how to do it c.whe
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英语!英语!Please tell me_____next.A how to do B what to do it C
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what will you do if you are asleep?please tell me the way to
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Please tell me____to improve my English. 为什么填what to do
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Would you please tell me what to do next? do 为及物动词后跟宾语,为什么wh
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would you please tell me()next A how to do B what to do C wh
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Could you tell me ___ to do next,please?填what还是how?
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Would you please tell me __ next?A.how to do B.what to do C.
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what do you want me to tell your mother Please tell her .abo
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Please tell me____to improve my English.为什么填what to do
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Please tell me__next?A how to do Bwhat to do C to do what D
2024-05-033个回答
Would you please tell me what to do it 对吗,how to do 后面可以接it吗
2024-05-031个回答
Please tell me what to do是一个完整的句子吗?what to do是作宾语吗
2024-05-034个回答
你能帮帮他们吗
英语句子中谓语的省略@@ 处有LIVE 的我给划去了,是否正确?英语句子的省略 这部分局的例子是用 AND连接的句子里前
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(发生在教室里的一件事)作文35O字左右.要求有时间、地点、人物、起因、经过、结果
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精彩回答
.My mother told me to _______(finish)my homework first.She t
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She told me many times that she was sure to come.
2024-05-023个回答
把下列句子翻译成英文。1、老师是人类灵魂的工程师。2、不但可以学到很多知识,而且可以读到很多书。3、为祖国培养了很多栋梁
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电磁波在真空中的传播速度是 频率是30兆赫的电磁波在空气中传播时的波长是
2024-05-022个回答