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今日已更新 10 道题
不定积分：∫(x^2-2x+2)e^-xdx.要用到两次分部积分：∫(x^2-2x+2)e^(-x)dx=-(x^2-2x+2)e^(-x)- ∫(2x-2)e^(-x)dx=-(x^2-2x+2)e^
https://www.ouer.net/chuzhongshuxue/wzn4.html - 2022-11-02 14:51:41 - 中学数学试题求不定积分：∫xcos(4x^2 +5)dx.
https://www.ouer.net/chuzhongshuxue/wvnb.html - 2022-11-05 08:52:23 - 中学数学试题求不定积分1／（1+√x)dx怎么解.令√x=t,则x=t^2,dx=2tdt∫1/(1+√x)dx=2∫t/(1+t)dt=2∫[(1-1/(1+t)]dt=2(t-ln |1+t|)+C=2√x-2ln
https://www.ouer.net/chuzhongshuxue/0544.html - 2022-11-22 16:47:50 - 中学数学试题求不定积分∫(xe^x)/(e^x+1)^2.令y=e^x,x=lny,dx=1/ydy.原式=∫lny/(y+1)^2dy分部积分：令u=lny,v'=1/(y+1)^2则∫lny/(y+1)^2dy
https://www.ouer.net/chuzhongshuxue/f03.html - 2022-01-29 23:56:15 - 中学数学试题1/（1+ex）的不定积分怎么算.e的X次方还是ex?
https://www.ouer.net/chuzhongshuxue/vr6v.html - 2022-10-27 21:26:14 - 中学数学试题请求1/1+x^4的不定积分.方法一：1＋x^4＝(x^2－√2x＋1)(x^2＋√2x＋1),按照有理函数的部分分解的方法,1/(1+x^4)＝1/(2√2)×[(x+√2)/(x^2+√2x+1)－
https://www.ouer.net/chuzhongshuxue/x601.html - 2022-11-15 09:42:10 - 中学数学试题不定积分(cosX-sinX)/(1+sinXcosX)RT.我觉得楼上解法不对,一楼的方法也不可取,将dx代为du时太繁.应该用三角通法（我暂时没有想出更好的）设t=tan（x/2）cosx sinx
https://www.ouer.net/chuzhongshuxue/kmce.html - 2022-08-01 07:43:48 - 中学数学试题不定积分 ∫dx/√（x²+1）³的解答过程.
https://www.ouer.net/chuzhongshuxue/f5z.html - 2022-01-30 05:04:04 - 中学数学试题求 x2√(4-x2) dx 不定积分.令x＝2sinu,则u＝arcsin（x/2）,dx＝2cosudu.
https://www.ouer.net/chuzhongshuxue/wfbb.html - 2022-11-04 01:29:06 - 中学数学试题不定积分e^e^2x怎么求要过程.答案是无穷级数 思路：1,令u=e^2x,积分化成（1/2）∫e^udu/u,2.把e^u展开为幂级数,除以u.然后逐项积分3,换回x
https://www.ouer.net/chuzhongshuxue/x6e7.html - 2022-11-15 12:10:11 - 中学数学试题根号x平方加1的不定积分是多少啊.
https://www.ouer.net/chuzhongshuxue/z8x.html - 2022-01-23 18:28:06 - 中学数学试题求不定积分的递推公式In＝∫（lnX）＾ndX（n＝1,2,…）.令I(n)=x(lnx)^n-∫ xd(lnx)^n=x(lnx)^n-∫ xn(lnx)^(n-1)(1/x)dxI(n)=x(lnx
https://www.ouer.net/chuzhongshuxue/f1dr.html - 2022-09-22 14:14:31 - 中学数学试题1除以（x乘根号1-x^2）的不定积分.这样的题一般用三角代换.令x=sint,dx=costdt∫dx/[x√(1-x^2)]=∫costdt/[sintcost]=∫1/sint*dt=∫sint/
https://www.ouer.net/chuzhongshuxue/r43m.html - 2022-10-08 06:58:40 - 中学数学试题有理函数的不定积分真分式为什么那样拆啊.拆项是分式连乘的积分中常用的方法,拆开后就易于积分了 比如1/((x^2+1)*x)=1/x-x/(x^2+1)
https://www.ouer.net/chuzhongshuxue/r6vv.html - 2022-10-08 18:22:55 - 中学数学试题不定积分(8-x^2)^1/2dx是多少.∫√（8-x²）dx=2√2×∫√（1-(x/√2)²）dx令x/√2=sint(-∏/2≦t≦∏/2),则cost=x/√2 ,t=arcsin
https://www.ouer.net/chuzhongshuxue/vr84.html - 2022-10-27 22:01:52 - 中学数学试题求不定积分∫(1/x²）cos（1/x）dx.显然d(1/x)= -1/x² dx所以得到原积分=∫ (1/x²) *cos(1/x) dx=∫ -cos(1/x) d(1
https://www.ouer.net/chuzhongshuxue/k919.html - 2022-07-29 23:10:08 - 中学数学试题请教一个对不定式符号to理解的问题我确定不了在句子The implications are plain to see中,不定式符号to所表达的意思.我知道 plain to see 的意思是 very
https://www.ouer.net/yingyu/k8uwz.html - 2022-10-16 23:52:28 - 英语作业答案不定式做定语和过去分词作定语的区别we have two rooms (to live)in ,but I can't decide which to choose.为什么这里要用不定式啊?
https://www.ouer.net/chuzhongyingyu/hfw.html - 2022-01-24 07:24:16 - 中学英语试题I'm glad to do that.这里的不定式to do that在句中作什么成分啊?是宾语还是状语?.
https://www.ouer.net/yingyu/7m29.html - 2021-06-05 23:06:10 - 英语作业答案不定代词的英语英语题同义句转换1 I listen carefully but didn’t hear anythingI listen carefully but ——2 he didn’t find
https://www.ouer.net/chuzhongyingyu/zuna.html - 2022-04-24 05:02:06 - 中学英语试题非谓语动词的动词不定式的问题Her mother plans to fly to Beijing at least four times a year to visit her 这里面 to fly
https://www.ouer.net/chuzhongyingyu/zuxb.html - 2022-04-24 20:37:10 - 中学英语试题求不定积分x3×根号下a2-x2如题.∫ x^3√(a^2 - x^2) dx= ∫ x[a^2 - (a^2 - x^2)]√(a^2 - x^2) dx= ∫ x[a^2√(a^2 - x^2) -
https://www.ouer.net/chuzhongshuxue/0xc4.html - 2022-11-20 21:15:45 - 中学数学试题不定代词练习一.改成正确形式.1.Are there anyone in the room?
https://www.ouer.net/chuzhongyingyu/zkdm.html - 2022-04-15 04:51:04 - 中学英语试题为什么有一些不定代词要加else,如“someone——someone else、anyone——anyone else……”.
https://www.ouer.net/yingyu/u51w.html - 2020-11-03 02:18:08 - 英语作业答案高数不定积分问题!已知f(u)具有二阶连续的导数,求不定积分∫f''(e^x)e^2x dx.f右上角的两撇是二阶导,括号里面e的指数为x,外头的e的指数为2x..
https://www.ouer.net/chuzhongshuxue/nez9.html - 2022-04-06 20:24:18 - 中学数学试题用如图所示的装置,培养柳枝（一个是“浸在水中部分的茎生出不定根”,另一个是“柳枝环剥部位生出了不定根”）.一周后,可以看到图中的现象你能对此作出解释吗?由此你可得到什么结论?
https://www.ouer.net/shengwu/cfe7.html - 2021-01-19 09:02:41 - 生物作业答案动词不定式修饰动名词本人大胆猜想,自己造句,切勿抄袭 It' is bad being angry to throw the hat 气得把帽子给扔了是不对的 这句话是否成立,如成立,动词不定式是做状语还是定语
https://www.ouer.net/chuzhongyingyu/hf1.html - 2022-01-24 07:31:22 - 中学英语试题若f(x)=e^-x,则f'(lnx)/x的不定积分是多少 基础不好.
https://www.ouer.net/zati/kxmn.html - 2022-07-20 23:29:07 - 中学考试杂题一句歌颂青春的语句不定字数.
https://www.ouer.net/yuwen/ne0en.html - 2021-10-25 14:58:19 - 语文作业答案求dx/cos^2*x*根号下1+tanx的不定积分.∫ √(1+tanx) / cos²x dx= ∫ √(1+tanx) dtanx= ∫ √(1+tanx) d(1+tanx)= (2/
https://www.ouer.net/chuzhongshuxue/ufcz.html - 2022-10-19 15:13:37 - 中学数学试题求不定积分：(x*arctanx)/[(1+x^2)^3]希望有过程..
https://www.ouer.net/chuzhongshuxue/wfb3.html - 2022-11-04 01:36:06 - 中学数学试题定冠词与不定冠词的使用 填空One day ( )man went to see ( )doctor and said that he had swallowed ( )house.( )doctor
https://www.ouer.net/chuzhongyingyu/zz7h.html - 2022-04-13 03:16:13 - 中学英语试题一道简单的不定积分求H(sinx*cos2x*dx)H代表不定积分符号答案里面一步就得出了(1/2)*H(sin3x-sinx)dx,如果有其他好方法也ok,thx..对sinx*cos2x用积化和差
https://www.ouer.net/chuzhongshuxue/f1vm.html - 2022-09-22 16:04:16 - 中学数学试题求不定积分 ∫ （sin2x -e^x/3 ) dx.∫ [sin2x -e^(x/3 )] dx =∫ sin2xdx-∫e^(x/3) dx =1/2∫ sin2xd2x-3∫e^(x/3 )d(x
https://www.ouer.net/chuzhongshuxue/vuxx.html - 2022-10-28 08:48:38 - 中学数学试题求∫（3x+1)^2dx的不定积分.答：∫(3x+1)^2dx=(1/3)∫(3x+1)^2d(3x+1)=(1/3)(1/3)(3x+1)^3+C=(3x+1)³/9+C
https://www.ouer.net/chuzhongshuxue/0ndz.html - 2022-11-17 05:47:38 - 中学数学试题求 tan^4x 不定积分大概给个思路.下面是一个解题思路,令y=tanxdy=sec²(x)dx=(1+tan²(x))dx=(1+y²)dxdx=dy/(1+y²
https://www.ouer.net/chuzhongshuxue/uvak.html - 2022-10-20 22:56:03 - 中学数学试题动词不定式做主语时,谓语动词用第三人称单数?为什么?. 俺认为动词不定式做主语时,就相当于形式评语IT,所以谓语动词用第三人称单数.
https://www.ouer.net/yingyu/7x81.html - 2021-06-04 14:10:03 - 英语作业答案不定积分∫x/sin^2(x^2+1)dx 具体解法..
https://www.ouer.net/chuzhongshuxue/rvda.html - 2022-10-06 06:01:37 - 中学数学试题求1/x^2*sin1/x的不定积分急用.1/x² dx = -d(1/x)1/x² sin(1/x)dx = -sin(1/x) d(1/x)=dcos(1/x)求积分得cos(1
https://www.ouer.net/chuzhongshuxue/0cbk.html - 2022-11-19 05:35:43 - 中学数学试题求不定积分∫x^3(x^2+2)^(1/2)dx.答：∫ x³√(x²+2) dx=(1/2) ∫ x²√(x²+2) dx²=(1/2)∫ (x²
https://www.ouer.net/chuzhongshuxue/v1nz.html - 2022-10-29 14:09:55 - 中学数学试题用部分积分法求下列不定积分:∫arctan（√x）dx ,.
https://www.ouer.net/chuzhongshuxue/f6n.html - 2022-01-30 06:13:01 - 中学数学试题汉译英：早起是有益于我们身体健康的（不定式作主语）.To get up early is good for our health
https://www.ouer.net/chuzhongyingyu/e38.html - 2022-02-23 01:07:09 - 中学英语试题英语：用不定冠词填空1.I saw ____old granny and ____ child in __ street.____ granny took ____ child by ___hand.2
https://www.ouer.net/chuzhongyingyu/zdbx.html - 2022-04-16 13:09:08 - 中学英语试题心里七上八下不能安定.形容心神不定.的成语,1个.
https://www.ouer.net/qita/6d57.html - 2020-10-28 18:47:27 - 其它对(㏑x－1)/(lnx)²求不定积分.这题要技巧性比较高,需要观察被积函数的形式：正好是(u/v)'=(u'v-uv')/v^2的形式那么显然这里v=lnx,那么由u'v-uv'=u'(lnx
https://www.ouer.net/zati/n2w2.html - 2022-03-27 21:37:24 - 中学考试杂题求∫e^(-3x +1)dx的不定积分.
https://www.ouer.net/chuzhongshuxue/uffb.html - 2022-10-19 15:02:14 - 中学数学试题求x*cos^2x的不定积分急用.
https://www.ouer.net/chuzhongshuxue/k918.html - 2022-07-29 23:08:13 - 中学数学试题大一微积分啊..求不定积分/(cosx)^4*(sinx)^3dx=?.
https://www.ouer.net/chuzhongshuxue/r4e3.html - 2022-10-08 08:33:17 - 中学数学试题请问,be sure +不定式 和be sure of/about +动名词/名词 和be sure+宾语从句有什么区别.
https://www.ouer.net/yingyu/z8uk.html - 2021-03-07 03:19:11 - 英语作业答案不定式和所修饰的名词可以构成主谓关系吗 请举个例子.He is always the first (person) to come and the last(person) to leave.主谓关系
https://www.ouer.net/chuzhongyingyu/874.html - 2022-02-20 12:53:10 - 中学英语试题