making sure we found all the extremals
I am curios to know whether there is anyway to be sure that we found all the stationary points using Lagrange multiplier method.?
Thank you.
derivatives lagrange-multiplier maxima-minima
|
show 1 more comment
I am curios to know whether there is anyway to be sure that we found all the stationary points using Lagrange multiplier method.?
Thank you.
derivatives lagrange-multiplier maxima-minima
1
By being careful not to drop any solutions on the way?
– Hagen von Eitzen
Nov 11 '18 at 13:53
not so sure always.
– sam soft
Nov 11 '18 at 13:54
Your title and your question seem to be about two different things. Are you asking how can you be sure that you find all the maximizers and/or minimizers using the Lagrange multiplier mehtod, or are you asking how can you be sure you found all the stationary points of the Lagrangean? (These are different questions because the maximizer and/or minimizer may not be stationary points of the Lagrangean.)
– smcc
Nov 11 '18 at 15:21
Do you have a specific example in mind?
– saulspatz
Nov 11 '18 at 15:22
@smcc Yes i meant the same
– sam soft
Nov 11 '18 at 15:23
|
show 1 more comment
I am curios to know whether there is anyway to be sure that we found all the stationary points using Lagrange multiplier method.?
Thank you.
derivatives lagrange-multiplier maxima-minima
I am curios to know whether there is anyway to be sure that we found all the stationary points using Lagrange multiplier method.?
Thank you.
derivatives lagrange-multiplier maxima-minima
derivatives lagrange-multiplier maxima-minima
asked Nov 11 '18 at 13:52
sam soft
176
176
1
By being careful not to drop any solutions on the way?
– Hagen von Eitzen
Nov 11 '18 at 13:53
not so sure always.
– sam soft
Nov 11 '18 at 13:54
Your title and your question seem to be about two different things. Are you asking how can you be sure that you find all the maximizers and/or minimizers using the Lagrange multiplier mehtod, or are you asking how can you be sure you found all the stationary points of the Lagrangean? (These are different questions because the maximizer and/or minimizer may not be stationary points of the Lagrangean.)
– smcc
Nov 11 '18 at 15:21
Do you have a specific example in mind?
– saulspatz
Nov 11 '18 at 15:22
@smcc Yes i meant the same
– sam soft
Nov 11 '18 at 15:23
|
show 1 more comment
1
By being careful not to drop any solutions on the way?
– Hagen von Eitzen
Nov 11 '18 at 13:53
not so sure always.
– sam soft
Nov 11 '18 at 13:54
Your title and your question seem to be about two different things. Are you asking how can you be sure that you find all the maximizers and/or minimizers using the Lagrange multiplier mehtod, or are you asking how can you be sure you found all the stationary points of the Lagrangean? (These are different questions because the maximizer and/or minimizer may not be stationary points of the Lagrangean.)
– smcc
Nov 11 '18 at 15:21
Do you have a specific example in mind?
– saulspatz
Nov 11 '18 at 15:22
@smcc Yes i meant the same
– sam soft
Nov 11 '18 at 15:23
1
1
By being careful not to drop any solutions on the way?
– Hagen von Eitzen
Nov 11 '18 at 13:53
By being careful not to drop any solutions on the way?
– Hagen von Eitzen
Nov 11 '18 at 13:53
not so sure always.
– sam soft
Nov 11 '18 at 13:54
not so sure always.
– sam soft
Nov 11 '18 at 13:54
Your title and your question seem to be about two different things. Are you asking how can you be sure that you find all the maximizers and/or minimizers using the Lagrange multiplier mehtod, or are you asking how can you be sure you found all the stationary points of the Lagrangean? (These are different questions because the maximizer and/or minimizer may not be stationary points of the Lagrangean.)
– smcc
Nov 11 '18 at 15:21
Your title and your question seem to be about two different things. Are you asking how can you be sure that you find all the maximizers and/or minimizers using the Lagrange multiplier mehtod, or are you asking how can you be sure you found all the stationary points of the Lagrangean? (These are different questions because the maximizer and/or minimizer may not be stationary points of the Lagrangean.)
– smcc
Nov 11 '18 at 15:21
Do you have a specific example in mind?
– saulspatz
Nov 11 '18 at 15:22
Do you have a specific example in mind?
– saulspatz
Nov 11 '18 at 15:22
@smcc Yes i meant the same
– sam soft
Nov 11 '18 at 15:23
@smcc Yes i meant the same
– sam soft
Nov 11 '18 at 15:23
|
show 1 more comment
1 Answer
1
active
oldest
votes
Following the procedure going, without any guessing involved, and not dropping any solutions on the way(for example, +- issue) one can be sure, that there were no stationary points left out. You can be sure in that, for example, if you look at the derivation of Euler-Lagrange theorem.
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
return StackExchange.using("mathjaxEditing", function () {
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
});
});
}, "mathjax-editing");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "69"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f2993904%2fmaking-sure-we-found-all-the-extremals%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Following the procedure going, without any guessing involved, and not dropping any solutions on the way(for example, +- issue) one can be sure, that there were no stationary points left out. You can be sure in that, for example, if you look at the derivation of Euler-Lagrange theorem.
add a comment |
Following the procedure going, without any guessing involved, and not dropping any solutions on the way(for example, +- issue) one can be sure, that there were no stationary points left out. You can be sure in that, for example, if you look at the derivation of Euler-Lagrange theorem.
add a comment |
Following the procedure going, without any guessing involved, and not dropping any solutions on the way(for example, +- issue) one can be sure, that there were no stationary points left out. You can be sure in that, for example, if you look at the derivation of Euler-Lagrange theorem.
Following the procedure going, without any guessing involved, and not dropping any solutions on the way(for example, +- issue) one can be sure, that there were no stationary points left out. You can be sure in that, for example, if you look at the derivation of Euler-Lagrange theorem.
answered Nov 21 '18 at 11:57
Farid Hasanov
13
13
add a comment |
add a comment |
Thanks for contributing an answer to Mathematics Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Some of your past answers have not been well-received, and you're in danger of being blocked from answering.
Please pay close attention to the following guidance:
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f2993904%2fmaking-sure-we-found-all-the-extremals%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
By being careful not to drop any solutions on the way?
– Hagen von Eitzen
Nov 11 '18 at 13:53
not so sure always.
– sam soft
Nov 11 '18 at 13:54
Your title and your question seem to be about two different things. Are you asking how can you be sure that you find all the maximizers and/or minimizers using the Lagrange multiplier mehtod, or are you asking how can you be sure you found all the stationary points of the Lagrangean? (These are different questions because the maximizer and/or minimizer may not be stationary points of the Lagrangean.)
– smcc
Nov 11 '18 at 15:21
Do you have a specific example in mind?
– saulspatz
Nov 11 '18 at 15:22
@smcc Yes i meant the same
– sam soft
Nov 11 '18 at 15:23