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共找到 1122518 与英语翻译1SydneyisthebiggestcityinAustralia 相关的结果,耗时529 ms
已知函数f(x)=1x.(1)若f(a)•(e-1)=∫e1f(x)dx,求a的值;(2)t>1,是否存在a∈[1,t]使得f(a)•(t-1)=∫t1f(x)dx成立?并给予证明;(3)结合定积分的几何意
数学
积分的几何意义说明(2)的几
刚学欧拉公式,我刚看了百科的证明过程,其中e^x=1+x/1!+x^2/2!+x^3/3!+x^4/4!+……这个应该是泰勒公式吧?可是泰勒公式不是只是在趋近于才近似相等的吗?在e^x的展开式中把x换成±ix.(±i)^2=-1,(±i)^3=
数学
……(注意:其中”〒”表示”
编译原理中FIRSTVT和LASTVT如题E->E+T.T->T*F|F.F->(E)|id求FIRSTVT(T)答案是FIRSTVT(T)={*,(,id}但是我看FIRSTVT集合的定义是FIRSTVT(A)={blA=>b或A=>Bb.....,b属于终结符,B属
其他
lA=>b或A=>Bb...
线性代数,特征值,这里第一步代入 |入E-A|我能看懂,可后面的(入-3)(入-2)(入-1)是怎么来的?另外,入1=1时,把它代入|入E-A|,可怎么就得到了[1 1 1]T?代入λ=1到λE-A=2 -4 20 -2 23 -1 -2第一列
数学
二个不是3么?怎么变成0了?
求下列参数方程所确定的函数的导数1.x=e∧tsinty=e∧tcost求dy/dx2.x=根号(1+t²)y=arctant求dy/dx3.x=sinty=cos2t求d²y/dx²4.x=2e∧ty=3e∧(-t)求d²y/dx²
数学
limx→0 ∫1 cosx e^(-t^2) /x^2已知这是个0/0型未定式,所以麻烦详解上面的求导部分,lim x→0 ∫上限1 下限cosx e^(-t^2)dt /x^2
数学
英译中“ Well I guess words can"t explain h...Well I guess words can"t explain how I feel about you but if you that way that there"s no
其他
ttraction betw
1 I don"t think that the way to be happy was to own as few things as possible.和 2 I don"t think that the way to be happy was to own as
其他
many things as
1.i didn't buy the second-hand book because the seller wanted () money than i had expected.A less B least C most D more另译这个句子2.Daniel,
英语
think Nick is
She wasn't happy yesterday,I think.要把这个句子连成一句的话,应该是:I didn't think she was happy yesterday还是I don't think she was happy yesterday?有谁知道
英语
,急哪位高手可以说的明白一点
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