What does the determinant of 3x3 matrix mean? how does the determinant tell me the orientation of polygon?
$begingroup$
I need help with understanding the problem. The coding isn't really the problem rather the math part. I don't understand what a delta test method that tells me determinant of a 3x3 matrix is supposed to help determine if an array of vertices of a simple polygon is convex or not. What does the determinant of 3x3 matrix mean? how does the determinant tell me the orientation of polygon? How can this help me determine if array of vertices of simple polygon is convex or not? I tried to implement using the gift wrapping method but the teacher said that it was too complicated for the class and just said to use the delta test to help. This kind of seems like duplicate of a few question but I still don't answer the solutions given:
What is the real meaning of the determinant of a matrix?
https://stackoverflow.com/questions/25830932/how-to-find-if-two-line-segments-intersect-or-not-in-java
but as a novice in these fields any help will be appreciated :)
matrices polygons
asked Jan 8 at 1:31
TaeCodaTaeCoda
15
$endgroup$
|
show 5 more comments
$begingroup$
I need help with understanding the problem. The coding isn't really the problem rather the math part. I don't understand what a delta test method that tells me determinant of a 3x3 matrix is supposed to help determine if an array of vertices of a simple polygon is convex or not. What does the determinant of 3x3 matrix mean? how does the determinant tell me the orientation of polygon? How can this help me determine if array of vertices of simple polygon is convex or not? I tried to implement using the gift wrapping method but the teacher said that it was too complicated for the class and just said to use the delta test to help. This kind of seems like duplicate of a few question but I still don't answer the solutions given:
What is the real meaning of the determinant of a matrix?
https://stackoverflow.com/questions/25830932/how-to-find-if-two-line-segments-intersect-or-not-in-java
but as a novice in these fields any help will be appreciated :)
matrices polygons
asked Jan 8 at 1:31
TaeCodaTaeCoda
15
$endgroup$
$begingroup$
I tried to ask in the stack exchange programming but it was held. I just wanted to understand the question and the math parts.
$endgroup$
– TaeCoda
Jan 8 at 1:32
$begingroup$
"I need help with understanding the problem. The coding isn't really the problem rather the math part." What problem are you referring to? I can't tell.
$endgroup$
– littleO
Jan 8 at 1:35
$begingroup$
stackoverflow.com/questions/25830932/… is the same "assignment" but I am working on trying to use the delta test (in the same link) to help determine if a given list of vertices is convex or not.
$endgroup$
– TaeCoda
Jan 8 at 1:37
$begingroup$
Oh I see, I didn't realize that the second question you linked to was specifically the problem you're working on.
$endgroup$
– littleO
Jan 8 at 1:39
$begingroup$
sorry. I am not very good at articulating my problems with English very well.
$endgroup$
– TaeCoda
Jan 8 at 1:47
|
show 5 more comments
$begingroup$
I need help with understanding the problem. The coding isn't really the problem rather the math part. I don't understand what a delta test method that tells me determinant of a 3x3 matrix is supposed to help determine if an array of vertices of a simple polygon is convex or not. What does the determinant of 3x3 matrix mean? how does the determinant tell me the orientation of polygon? How can this help me determine if array of vertices of simple polygon is convex or not? I tried to implement using the gift wrapping method but the teacher said that it was too complicated for the class and just said to use the delta test to help. This kind of seems like duplicate of a few question but I still don't answer the solutions given:
What is the real meaning of the determinant of a matrix?
https://stackoverflow.com/questions/25830932/how-to-find-if-two-line-segments-intersect-or-not-in-java
but as a novice in these fields any help will be appreciated :)
matrices polygons
asked Jan 8 at 1:31
TaeCodaTaeCoda
15
$endgroup$
I need help with understanding the problem. The coding isn't really the problem rather the math part. I don't understand what a delta test method that tells me determinant of a 3x3 matrix is supposed to help determine if an array of vertices of a simple polygon is convex or not. What does the determinant of 3x3 matrix mean? how does the determinant tell me the orientation of polygon? How can this help me determine if array of vertices of simple polygon is convex or not? I tried to implement using the gift wrapping method but the teacher said that it was too complicated for the class and just said to use the delta test to help. This kind of seems like duplicate of a few question but I still don't answer the solutions given:
What is the real meaning of the determinant of a matrix?
https://stackoverflow.com/questions/25830932/how-to-find-if-two-line-segments-intersect-or-not-in-java
but as a novice in these fields any help will be appreciated :)
matrices polygons
matrices polygons
asked Jan 8 at 1:31
TaeCodaTaeCoda
15
asked Jan 8 at 1:31
TaeCodaTaeCoda
15
asked Jan 8 at 1:31
TaeCodaTaeCoda
15
asked Jan 8 at 1:31
TaeCodaTaeCoda
15
asked Jan 8 at 1:31
TaeCodaTaeCoda
15
15
$begingroup$
I tried to ask in the stack exchange programming but it was held. I just wanted to understand the question and the math parts.
$endgroup$
– TaeCoda
Jan 8 at 1:32
$begingroup$
"I need help with understanding the problem. The coding isn't really the problem rather the math part." What problem are you referring to? I can't tell.
$endgroup$
– littleO
Jan 8 at 1:35
$begingroup$
stackoverflow.com/questions/25830932/… is the same "assignment" but I am working on trying to use the delta test (in the same link) to help determine if a given list of vertices is convex or not.
$endgroup$
– TaeCoda
Jan 8 at 1:37
$begingroup$
Oh I see, I didn't realize that the second question you linked to was specifically the problem you're working on.
$endgroup$
– littleO
Jan 8 at 1:39
$begingroup$
sorry. I am not very good at articulating my problems with English very well.
$endgroup$
– TaeCoda
Jan 8 at 1:47
|
show 5 more comments
$begingroup$
I tried to ask in the stack exchange programming but it was held. I just wanted to understand the question and the math parts.
$endgroup$
– TaeCoda
Jan 8 at 1:32
$begingroup$
"I need help with understanding the problem. The coding isn't really the problem rather the math part." What problem are you referring to? I can't tell.
$endgroup$
– littleO
Jan 8 at 1:35
$begingroup$
stackoverflow.com/questions/25830932/… is the same "assignment" but I am working on trying to use the delta test (in the same link) to help determine if a given list of vertices is convex or not.
$endgroup$
– TaeCoda
Jan 8 at 1:37
$begingroup$
Oh I see, I didn't realize that the second question you linked to was specifically the problem you're working on.
$endgroup$
– littleO
Jan 8 at 1:39
$begingroup$
sorry. I am not very good at articulating my problems with English very well.
$endgroup$
– TaeCoda
Jan 8 at 1:47
$begingroup$
I tried to ask in the stack exchange programming but it was held. I just wanted to understand the question and the math parts.
$endgroup$
– TaeCoda
Jan 8 at 1:32
$begingroup$
I tried to ask in the stack exchange programming but it was held. I just wanted to understand the question and the math parts.
$endgroup$
– TaeCoda
Jan 8 at 1:32
$begingroup$
"I need help with understanding the problem. The coding isn't really the problem rather the math part." What problem are you referring to? I can't tell.
$endgroup$
– littleO
Jan 8 at 1:35
$begingroup$
"I need help with understanding the problem. The coding isn't really the problem rather the math part." What problem are you referring to? I can't tell.
$endgroup$
– littleO
Jan 8 at 1:35
$begingroup$
stackoverflow.com/questions/25830932/… is the same "assignment" but I am working on trying to use the delta test (in the same link) to help determine if a given list of vertices is convex or not.
$endgroup$
– TaeCoda
Jan 8 at 1:37
$begingroup$
stackoverflow.com/questions/25830932/… is the same "assignment" but I am working on trying to use the delta test (in the same link) to help determine if a given list of vertices is convex or not.
$endgroup$
– TaeCoda
Jan 8 at 1:37
$begingroup$
Oh I see, I didn't realize that the second question you linked to was specifically the problem you're working on.
$endgroup$
– littleO
Jan 8 at 1:39
$begingroup$
Oh I see, I didn't realize that the second question you linked to was specifically the problem you're working on.
$endgroup$
– littleO
Jan 8 at 1:39
$begingroup$
sorry. I am not very good at articulating my problems with English very well.
$endgroup$
– TaeCoda
Jan 8 at 1:47
$begingroup$
sorry. I am not very good at articulating my problems with English very well.
$endgroup$
– TaeCoda
Jan 8 at 1:47
|
show 5 more comments
0
active
oldest
votes
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%2f3065714%2fwhat-does-the-determinant-of-3x3-matrix-mean-how-does-the-determinant-tell-me-t%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
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.
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%2f3065714%2fwhat-does-the-determinant-of-3x3-matrix-mean-how-does-the-determinant-tell-me-t%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
$begingroup$
I tried to ask in the stack exchange programming but it was held. I just wanted to understand the question and the math parts.
$endgroup$
– TaeCoda
Jan 8 at 1:32
$begingroup$
"I need help with understanding the problem. The coding isn't really the problem rather the math part." What problem are you referring to? I can't tell.
$endgroup$
– littleO
Jan 8 at 1:35
$begingroup$
stackoverflow.com/questions/25830932/… is the same "assignment" but I am working on trying to use the delta test (in the same link) to help determine if a given list of vertices is convex or not.
$endgroup$
– TaeCoda
Jan 8 at 1:37
$begingroup$
Oh I see, I didn't realize that the second question you linked to was specifically the problem you're working on.
$endgroup$
– littleO
Jan 8 at 1:39
$begingroup$
sorry. I am not very good at articulating my problems with English very well.
$endgroup$
– TaeCoda
Jan 8 at 1:47