Evaluate cos(15)

apple-orange2022-10-04 11:39:541条回答

Evaluate cos(15)
用双倍角求 COS 15

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j100135111 共回答了26个问题 | 采纳率92.3%
sin2x=2sinxcosx
sin30=2sin15cos15
1/2=2sin15cos15
1/4=cos15√1-(cos15)^2
1/16=(cos15)^2[1-(cos15)^2]
cos15=(1/2+√3/4)^1/2
1年前

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英语翻译
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帮我提供一些材料吧 越多越好谢谢 Evaluate the relative importance of the for
帮我提供一些材料吧 越多越好谢谢 Evaluate the relative importance of the forces of commerce and poli
我上的是双学位的课 现在要开始写论文了 我都有点手忙脚乱了 下周二要全部上传 我这手头上还有两篇要写的 不包括上面的这个 我觉得这个不好写 全是理论的东西.要疯了 帮忙找些材料 我好写点 因为肚子里就有东西了 呵呵 最好是中文的材料 不要光找出英文的了 应为我还要先看明白了才行 如果不嫌麻烦中英文的材料都有 那更好 嘎嘎 周二叫的 下周二啊 11月16号
Evaluate the relative importance of the forces of commerce and politics in refeudalising
Habermas’ public sphere.
Word Length:2000 words
pinknana271年前1
qq练摊qqqq 共回答了21个问题 | 采纳率95.2%
http://baike.baidu.com/view/132484.htm
http://baike.baidu.com/view/3167942.htm
你可以注册一个中国知网的帐号,www.***.net 里面有很多论文可查,不过要付费.
希望能够对你有所帮助.论文这东西是要花时间的,祝你成功!
will help me in my efforts to evaluate the threat this new a
will help me in my efforts to evaluate the threat this new arrival poses to my plans.
hjflxq1年前1
mengmengwmx 共回答了19个问题 | 采纳率84.2%
~将 有 助 于 我 判 断 新 来 者 对 我 计 划 可 能 造 成 的 威 胁
英语翻译Critically evaluate,in relation to the common law duty o
英语翻译
Critically evaluate,in relation to the common law duty of care,the liability of employers for references.How,if at all,does the liability of a university (such as the University of Sussex) differ regarding references given to potential employers in respect of current (or former) students.
kevin339221年前2
北斗璇玑 共回答了23个问题 | 采纳率82.6%
审慎评估,关于普通法的照顾责任和雇主推荐的义务.如果有的话,对于现在的学生来说,一所大学的推荐(如苏塞克斯大学的)与潜在的雇主的推荐责任是不同的么?如何不同?
请大家帮忙翻译一下~高一水平★next time remember to evaluate carefully the
请大家帮忙翻译一下~高一水平★
next time remember to evaluate carefully the information in your search results
sunny7891231年前3
Kingsen_Wang 共回答了16个问题 | 采纳率93.8%
下次记得仔细考虑你的搜索结果中的信息.
英语论文 教学法基础.Title:Compare,contrast and critically evaluate th
英语论文 教学法基础.
Title:
Compare,contrast and critically evaluate the main methods and approaches that have been used in English language teaching comment on the extent to which each of these can be used in your future teaching practice.
2000字.
留恋红尘因一醉1年前1
mzdznl 共回答了19个问题 | 采纳率78.9%
这个太有难度了,不是一般人能搞定的.
题目:
比较,对比度和审慎评估的主要方法,并已在英文中载明在这些每个人都可以在今后的教学实践中的使用程度教学意见用的方法.
国外的中学数学题:.evaluate ∫(x-2)√(x-1) dxe.g.(例)Evaluate:∫(2x+1)^3
国外的中学数学题:.
evaluate ∫(x-2)√(x-1) dx
e.g.(例)
Evaluate:
∫(2x+1)^3 dx
Solution:
Let u=2x+1
du/dx=2
i.e.dx=du/2
∫(2x+1)^3 dx
=∫1/2 u^3 du
=1/8 u^4+C
=1/8(2x+1)^4+C
积分,导数,虽然大学里也有的。
wangxr1年前2
iyutrew 共回答了14个问题 | 采纳率78.6%
你肯定这是中学数学题?
这应该是积分,属于高等数学.
基本原理为:
d(x^n) = n x^(n-1) dx
∫x^n dx = 1/(n+1) x^(n+1) + C
∫(f(x)+g(x)) dx = ∫f(x)dx + ∫g(x)dx
至于解题嘛,参照题目解法:
let u = √(x-1)
x = u^2 + 1
dx = 2u du
代入:
∫(x-2)√(x-1) dx = ∫(u^2-1)u2u du = ∫(2 u^4 - 2 u^2) du
= 2/5 u^5 - 2/3 u^3 + C
= ...
这样会了吧.
现在高中就开始学积分哪,夸张……
英语翻译The consultant shall evaluate formal comments on the lan
英语翻译
The consultant shall evaluate formal comments on the landscape concept design stage from the clients and any other design opinionated parties involved in this project.
圣门1年前1
我只发挥了百分20 共回答了23个问题 | 采纳率91.3%
顾问在工程景观概念设计阶段要对客户及其它参与设计方的正式意见作出评估.
请问EVALUATE这个是什么意思呢?
请问EVALUATE这个是什么意思呢?
按照你说的步骤成功了,但是我想知道=EVALUATE(Sheet1!A1)这个的含义是什么呢?
cat_ling1年前1
605428388 共回答了22个问题 | 采纳率72.7%
evaluate函数是宏表函数,不能像普通函数那样直接在工作表公式中使用,可以先定义一个名称,使该名称的表达式中包含该函数、然后在公式中引用此名称的方法,间接地使用该函数.
Microsoft Excel 宏函数帮助中:
evaluate
只用于宏表
对以文字表示的一个公式或表达式求值,并返回结果.若要运行宏或子例程,请使用 RUN 函数.
语法
EVALUATE(formula_text)
Formula_text 是一个要求值的以文字形式表示的表达式.

使用EVALUATE类似于在编辑栏的公式内选定一个表达式并按下了[重新计算]键(在Microsoft Excel for Windows 中是F9).EVALUATE 用一个值来替换一个表达式.
英语翻译The objective of this study was to evaluate how northern
英语翻译
The objective of this study was to evaluate how northern flying squirrels (Glaucomys
sabrinus) locate truffles (Gautieria monticola),a subterranean and ephemeral but primary food
source.Thus,we evaluated the importance of three factors to the foraging behavior of
northern flying squirrels:(i) olfactory chemicals that emanate from truffles; (ii) the presence of
coarse woody debris (decaying logs),which are often associated with fungi; and (iii) we
explored the potential role animal memory could play in truffle detection as well.In a foraging
arena,squirrels successfully retrieved buried truffles that lacked aboveground cues in 19 of 30
trials and failed to search near treatments that lacked truffles altogether,confirming the
importance of olfaction to squirrel foraging.However,squirrels also retrieved truffles that were
associated most frequently with surface logs (27 of 30).In addition,the initial detection rate of
the truffle + log treatment was significantly greater than the truffle-only treatment.Thus,
although squirrels search for truffles primarily using olfaction,they may also benefit by
searching near coarse woody debris on the forest floor as an aboveground cue to truffle
locations.In addition,because 82% of Sierra Nevada truffle-fruiting locations that were marked
in 1996 yielded truffles again the following 2 years,mycophagous animals like northern flying
squirrels may benefit by memorizing fruiting locations and foraging at these same locations
from year to year.
如果太长,给出大体思路能看懂就行,
calfhillary1年前2
wsniuzhen 共回答了13个问题 | 采纳率84.6%
大概是讲:本次研究的目的是评估北鼯鼠( Glaucomys sabrinus )的觅食行为.比如它们找到松露( Gautieria monticola )的方式.评估北鼯鼠觅食行为重要的三个因素:1.通过嗅觉触到从松露中所发散的化学物质; 2.通过往往是伴有真菌存在的腐朽木质;3.从探索以及对松露检测中发现通过动物的潜在记忆寻找.在30次的实验当中有19次松鼠成功的找回了被埋藏起来的松露,也遇到了失败.这样就确认了嗅觉在松鼠觅食当中有着十分重要的作用.然而,在30次的27次实验当中松鼠都能从粗木质残体中找到松露.就是说,寻找松露和粗木质残体比只是寻找松露更有效.因此,虽然松鼠寻找松露主要使用嗅觉,但是他们也可能从粗木质残体中受益,在森林的地面上寻找附近地上的松露.
最后一些话强调松鼠通过记忆力在原来发现松露的地方继续寻找松露.
希望能帮到你哦!有用的话,就加分吧!
求一篇英语作文critically evaluate hofstede is six cultural dimensio
求一篇英语作文
critically evaluate hofstede is six cultural dimensions ,discuss the usefulness of hofstede is model in managing in an intermational business context,include references to at least two countries
CQPDBBLL1年前2
cxf4419262 共回答了19个问题 | 采纳率100%
百度一下
calculate与 evaluate有什么区别,怎么样来区分这两个单词
calculate与 evaluate有什么区别,怎么样来区分这两个单词
还有compute这个词,这三个词都有“估计”“计算”的意思好像,那要怎么区分它们怎么用呢
神气的波波1年前2
独思者 共回答了23个问题 | 采纳率95.7%
calculate 是计算
evaluate 是评估
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