当然,同时对y求导也行,得到 3x^2x_y'-3y^2=0 ,这里 x_y' 表示x对y求导。 不可以 x^3 对x求导, y^3 对y求导,这太荒唐了。 就像等式两边一边加1一边减1一样荒唐,等式根本都不等了。 更新: 之所以写这个答案,是因为看过很多答案将dx,dy理解成微分,然后来解释微积分符号的含义。 知乎,中文互联网高质量的问答社区和创作者聚集的原创内容平台,于 2011 年 1 月正式上线,以「让人们更好的分享知识、经验和见解,找到自己的解答」为品牌使命。知乎凭借认真、专业、友善的社区氛围、独特的产品机制以及结构化和易获得的优质内容,聚集了中文互联网科技、商业、影视 ... 关于y=sin(1/x)在 x 趋向于 0 时的极限问题:我知道如题时不存在极限,因为x→0时,1/x→无穷,而且图像… 首先,当x和y的关系是由任意单调函数描述的,则它们是完全皮尔逊相关的。 与此相应的,皮尔逊相关系数只能给出由线性方程描述的X和Y的相关性。 其次,斯皮尔曼不需要先验知识(也就是说,知道其参数)便可以准确获取XandY的采样概率分布。 对于积分 \iint\limits_Rf(x,y)dxdy ,进行如下变换. x=r\cos\theta \\y=r\sin\theta. 这是一个典型的非线性变换。按照微积分的直觉,我们要把非线性的东西用线性来估计。所以人们发明了雅可比矩阵来用线性变换来估计非线性变换。则对应的雅可比矩阵为: y→ (→在上) 念 y-arrow;中文 y-箭头; 需要说明的是,这些念法只是多数人的发音方式,并没有任何规定如何念;特别是中文,各地差别很大。在不同语境下存在其他的念法,比如 @王非 提到的『y的拟合值』这样的说法就是在特定领域中出现的。 (PS. 知乎,中文互联网高质量的问答社区和创作者聚集的原创内容平台,于 2011 年 1 月正式上线,以「让人们更好的分享知识、经验和见解,找到自己的解答」为品牌使命。知乎凭借认真、专业、友善的社区氛围、独特的产品机制以及结构化和易获得的优质内容,聚集了中文互联网科技、商业、影视 ... 中,我们用了 \mathbb{d}y=\mathbb{d}y 。然而,第一个 \mathbb{d}y 是一个自变量的微分,是。第二个 \mathbb{d}y 是利用换元 y=f(x) 之后对因变量的微分。所以,上面的约分要成立,要求在 y=f(x) 这个代换下微分相等的特性要保持住。 然而二阶微分并没有这么好的性质。 下面内容来自我的文章:跟着ReCLass在知乎上学常微分方程 - 知乎 (zhihu.com) 首先一阶线性微分方程 \frac{dy}{dx}+P(x)y=Q(x) 里的“一阶”是指 y 的阶数(微分方程的目标是为了求 y ),这里的一次包括 y 的一次方和 y 对 x 的一阶导(那同样:如果方程里是 y 的二次方和 y 对 x 的二阶导,就是二阶微分方程)。
2024.11.26 21:23 NenaricA3 Y ella es ottaaa
submitted by NenaricA3 to GatosArgentinos [link] [comments] |
2024.11.26 21:23 OpinionConstant1743 F. 3a r G4sm me to my g_.f best friend, I send g_f.s full. N b0d y. In return Kik:mackk313 sess in comments
submitted by OpinionConstant1743 to Snapchatgerman [link] [comments] |
2024.11.26 21:23 I_read_reddits_rules Hypothetical: an eccentric multi-billionare offers to pay $12 billion each for 3 new aircraft carriers—i.e. $36 billion for all 3— for your country, but you and your fellow citizens have to vote in favor of the terms for each proposal. Which proposal(s) for aircraft carrier(s) WYR have?
1. Each aircraft carrier proposal will have a polling: yes or no. If the majority of you and those of your country vote yes, it means your country agrees to the terms in the proposal for that particular aircraft carrier, and the eccentric multi-billionaire will pay for its construction.
2. You can vote:
yes to 1 proposal and no to 2 of them
yes to 2 proposals and no to 1 of them
yes to all 3,
or no to all 3.
3. There will be mechanisms to insure that the terms are meet. If they aren't meet, your country will immediately (or near immediately) lose the aircraft carrier, with no military, political, or legal recourse.
4. There are measures that will ensure the secrets of the carrier and your country's secrets (such as its weaponry, propulsion, strategies, or specific personnel) aren't exposed, or even used by the multi-billionaire.
5. A carrier could be sold, given, lent, leased, or rented out, but the terms will always apply. However, a carrier cannot be scraped nor cannibalized.
6. Each carrier has to be maintained as well as those existing aircraft carriers of the US, UK, France, Russia, and PRC.
7. The terms will apply for 40 years, after which, the terms below won't apply and your country can do with the aircraft carriers(s) it got what it wills.
8. as for the proposals
proposal for aircraft carrier A:
if you are a citizen of a NATO member state, Australia, Japan, South Korea, or NZ: >95% of the crew of this aircraft carrier, including the top 20 officers (including captain), must be people who have neither been born in a NATO member state, Australia, Japan, South Korea, or NZ; nor who have been citizens of a NATO member state, Australia, Japan, South Korea, and/or NZ for a total of 10 years or over.
if you are a citizen of Russia or from another wp:CSTO member state: >95% of the crew of this aircraft carrier, including the top 20 officers (including captain), must be people who have neither been born in Russia or from another CSTO member state; nor who have been citizens of Russia and/or from another CSTO member state for a total of 10 years or over.
if you are a citizen of China (PRC): >95% of the crew of this aircraft carrier, including the top 20 officers (including captain), must be people who have not been born in the PRC; nor who have been citizens of the PRC for a total of 10 years or over.
if you are a citizen of none of these countries: >95% of the crew of this aircraft carrier, including the top 20 officers (including captain), must be people who have neither been born in your country, any member state of NATO or CSTO, PRC, Australia, Japan, South Korea, or NZ; nor who have been citizen of your country, any member state of NATO or CSTO, PRC, Australia, Japan, South Korea, and/or NZ for a total of 10 years or over.
proposal for aircraft carrier B:
over 60% of the crew, including the top 20 officers, must be ciswomen who are to be at anytime no more dressed than a Hooters server.
≤ 35% of the crew can opt to conform to your country's navy uniform code or be no more dressed than a Hooter's server. However, at any time >60% of them must be the later and < 40% the former ((e.g. 35% x 60%) +( 35% x 40%) = 21% + 14% = 35%)).
≤ 5% of the crew can opt to conform to your country's navy uniform code or be no more dressed than a Hooter's server.
proposal for aircraft carrier C:
over 95% of the crew of this aircraft carrier, including the top 20 officers, must be white people. The definition of white would be such that they would be among 30% of Europe's whitest (west of the Urals, include United Kingdom, but exclude Turkey)
The crew also includes anyone who visits the aircraft carrier, including aircraft that lands on, and/or takes off from, it.
How would you vote?
View Poll
submitted by I_read_reddits_rules to WouldYouRather [link] [comments]
2024.11.26 21:23 tmadik Aubrey is the laughing stock of the entire human existence 🤦🏾♂️
submitted by tmadik to KendrickLamar [link] [comments] |
2024.11.26 21:23 cpt-crustacean [s2 act 3 spoilers] Arcane would've been so better off without the arcane in it, and the writers were wrong for moving away from politics
don't get me wrong, i do love this show and will continue to. but this season and its ending massively hurt how much i enjoy it.
from the first act there's immediately too much going on to be resolved in one season. lots of people complain about how rushed the show has felt this season, and i think the arcane element is why. season 1 got so much love because of the focus on the class conflict, alongside vi and jinx. the arcane was a backdrop to this conflict, adding to the class features (hexgates prompting trade etc).
in season two the arcane went from a backdrop to the story to fighting alongside the story. viktors story as jesus was so good, adding to the scenes of despair in zaun. mels was good, a pawn in a game of politics. this went off the fucking rails so fast, where the stakes suddenly become MCU-like, where all people are at stake and viktor is in multiple timelines to resolve the threat that he caused as a cosmic entity of the arcane. what the shit.
trouble in unifying a moral revolution? lovely. navigation of a political labirynth? splendid.
a jinxer saw an enforcer help an old lady and immediately decided to become one? huh. cosmic proportions threatening to fix all peoples flaws? how is this related to the show.
the writers got ass man. they said they wanted to keep the politics away from the show and all that did was complicate it, choosing the path of least resistance in a show thats centered around resistance. apologies for the rant, but this season made me lose faith in one of my favourite media pieces.
submitted by cpt-crustacean to arcane [link] [comments]
2024.11.26 21:23 laserslide How to Update YouTube vanced
Ive got Error 400 and I think its because my Version (19.16.39) is too old , but can anyone tell me where I can update vanced?
submitted by laserslide to youtube [link] [comments]
2024.11.26 21:23 Embarrassed-Affect86 Front back of this one.
Looks like a ranchero cowboy hat. Digging it. submitted by Embarrassed-Affect86 to BigApeMycology [link] [comments] |
2024.11.26 21:23 Forsaken-Climate2135 Toe help ! (Take 2)
I (14,F - if that's of any importance) don't know that these are, the bigger one has been there for at least a few (3+) years but the smaller one shown up this year. Pharmacist said it's just irritation and will go away, but even I know that's BS. not really painful, just uncomfortable when walking and not the prettiest thing to look at, it's made me pretty insecure. Anyone know what they are and how to treat them? submitted by Forsaken-Climate2135 to DermatologyQuestions [link] [comments] |
2024.11.26 21:23 ntrik Finished topcoat and water slide on Full Armor FA 78
submitted by ntrik to Gunpla [link] [comments]
2024.11.26 21:23 Ok_Hawk5026 Thick white cock doing tribute and ratings for hot girls! (Urself/gf/sis etc) 05aaba97f7278cbc50c7d8b5bf47c9de6f51aa99dbbeaa07f6da26dc8585bd1419
05aaba97f7278cbc50c7d8b5bf47c9de6f51aa99dbbeaa07f6da26dc8585bd1419
submitted by Ok_Hawk5026 to Snapchatgerman [link] [comments]
2024.11.26 21:23 AdAnJaguarfan Got gifted a binder of old cowboys
Anyone know who I should be looking for ? I don’t know old school cowboys submitted by AdAnJaguarfan to FootballCardz [link] [comments] |
2024.11.26 21:23 Icy-Macaron5195 [For Hire] Illustrator / Concept artist looking for work. Portfolio in the comments
submitted by Icy-Macaron5195 to gameDevClassifieds [link] [comments] |
2024.11.26 21:23 BPGod Week 2 of color-themed Juno run, we had 23 berries wearing a red glamour today.
https://preview.redd.it/mt3bocmacb3e1.png?width=2560&format=png&auto=webp&s=15125f64ba0ec71f142fd2ee732727ee39f5ec08 submitted by BPGod to ffxiv [link] [comments] |
2024.11.26 21:23 StrangeLetter1269 Who's y'all's fav character?
submitted by StrangeLetter1269 to SerafinaATBlackCloak [link] [comments]
2024.11.26 21:23 CROseljak Neil Oliver STUNNED as Dutch Official Reveals Covid-19 Was 'MILITARY Operation' in SHOCK Admission
submitted by CROseljak to DomovinaHR [link] [comments] |
2024.11.26 21:23 astaireboy [FRESH] The Huntress and Holder of Hands - Timbre Inaudible
submitted by astaireboy to indieheads [link] [comments] |
2024.11.26 21:23 Plenty_Art3184 What's The Worst Place To Hear "GOTTA GO FAST"?
submitted by Plenty_Art3184 to MoonPissing [link] [comments] |
2024.11.26 21:23 Dense_Shirt_1047 Gonal-F Pen Donation
submitted by Dense_Shirt_1047 to DOR [link] [comments]
2024.11.26 21:23 med10cre_at_best Brain fog after eating fruit and starches?
Help me... what is this??? Could I have candida??? I'm scared. I can't imagine doing AIP with just veggies and fish (I'm pescatarian). I'm also trying to do low fodmap to manage IBS symptoms and it all seems impossible. I'm already so constipated. Anyone else have this problem?
submitted by med10cre_at_best to AutoImmuneProtocol [link] [comments]
2024.11.26 21:23 middleviolet FTB timeline from viewing to completion
My partner and I have been long time followers of this subreddit, having viewed around 40 houses before we found our first (and forever) home. We have seen others giving timelines and it really helped us so hopefully this helps someone else. We were outbid on properties a few times, including once due to being up against someone with a higher deposit. We had an offer accepted on a property in June 2023 but the sellers pulled out a week later, and we had an offer accepted on another property in July 2023 but we pulled out due to a change in circumstances.
We hope this also gives someone else hope that even when you think you'll never find your home, it could be your next one!
For context:
2024.11.26 21:23 AutoNewspaperAdmin [World] - Brazil almost suffered far-right military coup, police report claims | Guardian
submitted by AutoNewspaperAdmin to AutoNewspaper [link] [comments] |
2024.11.26 21:23 Quirky-Carpenter-511 new characters and story progression
hello all
I started playing not long ago and im level 49 sorcerer but I want to try a new class after I finish coldharbor. the problem is im kind of a roleplayer and I immerse my self in the story, character and the world of the game.
so my question is, are there any drawbacks to creating a new character besides the riding skills and leveling the crafting from scratch?
what I mean is can I complete coldharbor and then continue the dlcs story with my new character and there wont be any references in the story that I might miss or not get because I didnt do the alliance and main story on the new character?
thanks in advance!
submitted by Quirky-Carpenter-511 to elderscrollsonline [link] [comments]
2024.11.26 21:23 locustchild PSA: read your bottles when you paint so you don't accidentally use a peel off base for your top coat...
Well there goes my whole manicure lol.
I was wondering "why is my clean up brush all gummy" and "why is this drying so flat" and "how on earth did my entire hand smudge 3 hours later" and didn't figure it out until I had procrastinated putting all the supplies away and finally noticed which side of the shelf i pulled my "top coat" from.
Any other fun disasters y'all have suffered so I feel less alone?
submitted by locustchild to RedditLaqueristas [link] [comments]
2024.11.26 21:23 Joel-1223 How religious are you Guys
I personally am a Christian, an I fully believe in God and the Afterlife. Through devotion to God I have fund inner Peace and a sense of Hope and security in my world Dominated by underlying Anxiety. I think Christianity is something beautiful, I regularly attend church.
submitted by Joel-1223 to psychopath [link] [comments]
2024.11.26 21:23 ApplicationOk1450 do i have round eyes or slander eyes
should i make them wider more doe thpe,or should i make them more slander like kendall jenners submitted by ApplicationOk1450 to Subliminal [link] [comments] |