Octave 解线性方程组
abellong
posted @ 2012年4月14日 01:00
in 数学
, 5592 阅读
$Octave$ 解线性方程组的能力还没有 $matlab$ 强. 对于方程 \(A\times X=B\), $Octave$ 要求 \(A\) 是方阵, \(B\) 是向量; 而 matlab 并没有这些要求, 假设 \(A\) 是 \(m\times n\), \(B\) 是 \(m\times k\), 则可以用 $matlab$ 算出 \(X\), 它是 \(n\times k\) 的.
$Octave$ 解方程组的式子为 \(A\backslash B\). 下面提供两个例子
octave:1> # octave:1> A=[0,2,0,1;2,2,3,2;4,-3,0,1.;6,1,-6,-5] A = 0 2 0 1 2 2 3 2 4 -3 0 1 6 1 -6 -5 octave:2> B=[0;-2;-7;6] B = 0 -2 -7 6 octave:3> A\B ans = -0.50000 1.00000 0.33333 -2.00000
先生成一个随机方阵 $C$ 和随机向量 $D$ 并解方程 $$C\times x=D$$
octave:1> C=rand(5,5) C = 0.847817 0.122730 0.298340 0.652850 0.985631 0.880412 0.618896 0.590534 0.485949 0.763285 0.358464 0.384306 0.469336 0.909417 0.554835 0.306760 0.672447 0.043989 0.371049 0.692044 0.314791 0.410965 0.487560 0.485444 0.892830 octave:2> D=rand(5,1) D = 0.50708 0.99851 0.31515 0.70781 0.66774 octave:3> C\D ans = 0.32657 0.77660 0.32264 -0.50477 0.37354
2021年9月07日 17:49
No matter the reason, there isn't any doubt how the maid costume will be as popular because ever. Certainly many of the appeal towards the costume originates from the males who desire to see women wear it instead of from ladies themselves attempting to portray the maid. It's been a significant fantasy associated with men all over the world for several years.
2022年9月06日 18:20
Bihar Board Model Paper 2023 Class 5 Pdf Download with Answers for English Medium, Hindi Medium, Urdu Medium & Students for Small Answers, Long Answer, Very Long Answer Questions, and Essay Type Questions to Term1 & Term2 Exams at official website. Bihar Board 5th Class Model Paper New Exam Scheme or Question Pattern for Sammittive Assignment Exams (SA1 & SA2): Very Long Answer (VLA), Long Answer (LA), Small Answer (SA), Very Small Answer (VSA), Single Answer, Multiple Choice and etc.
2024年8月22日 16:10
Discover your perfect stay with WorldHotels-in.com, your ultimate destination for finding the best hotels worldwide! Our user-friendly platform offers a vast selection of accommodations to suit every traveler’s needs and budget. Whether you’re planning a luxurious getaway or a budget-friendly adventure, we’ve got you covered with our extensive database of hotels across the globe.
2024年8月22日 16:18
I like these topics very much. I would like to see such topics daily, this post is very good indeed. There are people like you in the world who put forth their views. Thank you so much for posting such a great post.
2024年8月22日 16:20
valley trip india is best tour company in india we offer all types of holiday packages starts from india like Mumbai kolkata Jaipur kashmir ladakh and so on we are a group of local travel agents based in all states of india you can find delhi tour packages , himachal tour package , and Rajasthan tour packages , here we provide best travel services from our side, in our travel services we suggest you vaishno Devi tour package , and so on book and get the best tour packages.
2024年8月22日 16:21
You lost me personally, friend. What i’m stating is, I imagine I recieve what youre saying. I’m sure what you’re saying, however you simply appear to have forgotten that could be other folks within the globe who view this issue for what it truly is and may even perhaps not think you. You will be switching away much people who appeared to be lovers of your respective website.
2024年8月22日 16:22
You lost me personally, friend. What i’m stating is, I imagine I recieve what youre saying. I’m sure what you’re saying, however you simply appear to have forgotten that could be other folks within the globe who view this issue for what it truly is and may even perhaps not think you. You will be switching away much people who appeared to be lovers of your respective website.
2024年8月22日 16:23
A lot of thanks for all of the hard work on this blog. My niece takes pleasure in engaging in internet research and it is simple to grasp why. We learn all relating to the compelling method you make helpful suggestions by means of your blog and therefore attract contribution from visitors on this area while my princess is discovering a lot of things. Have fun with the rest of the new year. You’re carrying out a very good job.
2024年8月22日 16:25
Hi there just wanted to give you a brief heads up and let you know a few of the images aren’t loading correctly. I’m not sure why but I think its a linking issue. I’ve tried it in two different browsers and both show the same outcome.
2024年8月22日 16:26
Hi there just wanted to give you a brief heads up and let you know a few of the images aren’t loading correctly. I’m not sure why but I think its a linking issue. I’ve tried it in two different browsers and both show the same outcome.
2024年8月22日 16:27
I’ve been exploring for a little for any high-quality articles or weblog posts on this kind of area . Exploring in Yahoo I finally stumbled upon this web site. Reading this information So i’m glad to express that I’ve an incredibly good uncanny feeling I discovered just what I needed. I most no doubt will make sure to don’t forget this website and give it a glance regularly.
2024年8月22日 16:28
Somebody necessarily lend a hand to make significantly posts I would state. This is the very first time I frequented your website page and to this point? I surprised with the analysis you made to make this particular put up amazing. Excellent activity!
2024年8月22日 16:29
You lost me personally, friend. What i’m stating is, I imagine I recieve what youre saying. I’m sure what you’re saying, however you simply appear to have forgotten that could be other folks within the globe who view this issue for what it truly is and may even perhaps not think you. You will be switching away much people who appeared to be lovers of your respective website.
2024年8月22日 16:31
I think youve made some actually helpful factors.
2024年8月22日 17:04
Karachi Call Girls has got you covered!
2024年8月22日 17:10
Somebody necessarily lend a hand to make significantly posts I would state. This is the very first time I frequented your website page and to this point? I surprised with the analysis you made to make this particular put up amazing. Excellent activity!
2024年8月22日 17:14
An impressive share, other websites.
2024年8月22日 17:16
Dewapoker adalah situs judi poker online terpercaya di Asia. Situs ini memberikan bonus pada setiap harinya. Situs ini sering mengadakan event berhadiah yang dapat Anda dapatkan.
2024年8月22日 17:47
With a quick visit to the kinogoby website, I stumbled upon a collection of documentaries that promised to enlighten and inspire. Intrigued by the prospect of delving into the depths of human experience, I selected a film that explored the wonders of the natural world
2024年8月22日 18:05
Poker88 adalah situs poker online disini
2024年8月22日 18:07
There've been highs and lows, ripe for the pickin'!
2024年8月22日 18:11
an tremendous percentage Anyways, simply wanted to mention high-quality weblog!
2024年8月22日 18:11
I like viewing web sites which comprehend the price of delivering the excellent useful resource free of charge. I truly adored reading your posting. Thank you! two full thumbs up for this magneficent article of yours. I've really enjoyed reading this article today and I think this might be one of the best article that I've read yet. Please, keep this work going on in the same quality.Thanks for sharing this information. I really like your blog post very much. You have really shared a informative and interesting blog post . Your blog provided us with valuable information to work with. Each & every tips of your post are awesome. Thanks a lot for sharing. Keep blogging,
2024年8月22日 18:19
Do you think you can hold your own amongst sneaker collectors and call out a fake Off-White x Air Jordan 4 SP Sail when you see one? Definitely no! So, others are the same as you. Never mind wearing Fake Shoes, you are saving money for yourself!
2024年8月22日 18:20
Hats off to the amazing let's set forth on this digital journey together!