solve for y: $xy'=y^2-2y$












0














$$xy'=y^2-2y$$ $$y(1) = 1, x >= 0$$



I get $C = 0$ which gives:



$$left| frac{y}{y-2}right|=x^2$$ When solving for $y$ it gives $$frac{2x^2}{1+x^2}$$, however the correct answer should be $$frac{2}{1+x^2}$$.



Is $$left| frac{y}{y-2}right|=x^2$$ correct? And if it is, how to continue from there?










share|cite|improve this question



























    0














    $$xy'=y^2-2y$$ $$y(1) = 1, x >= 0$$



    I get $C = 0$ which gives:



    $$left| frac{y}{y-2}right|=x^2$$ When solving for $y$ it gives $$frac{2x^2}{1+x^2}$$, however the correct answer should be $$frac{2}{1+x^2}$$.



    Is $$left| frac{y}{y-2}right|=x^2$$ correct? And if it is, how to continue from there?










    share|cite|improve this question

























      0












      0








      0







      $$xy'=y^2-2y$$ $$y(1) = 1, x >= 0$$



      I get $C = 0$ which gives:



      $$left| frac{y}{y-2}right|=x^2$$ When solving for $y$ it gives $$frac{2x^2}{1+x^2}$$, however the correct answer should be $$frac{2}{1+x^2}$$.



      Is $$left| frac{y}{y-2}right|=x^2$$ correct? And if it is, how to continue from there?










      share|cite|improve this question













      $$xy'=y^2-2y$$ $$y(1) = 1, x >= 0$$



      I get $C = 0$ which gives:



      $$left| frac{y}{y-2}right|=x^2$$ When solving for $y$ it gives $$frac{2x^2}{1+x^2}$$, however the correct answer should be $$frac{2}{1+x^2}$$.



      Is $$left| frac{y}{y-2}right|=x^2$$ correct? And if it is, how to continue from there?







      differential-equations






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked May 19 '14 at 11:18









      iveqy

      721816




      721816






















          1 Answer
          1






          active

          oldest

          votes


















          -1















          (2018-11-25) "Amusing" revenge downvote, four years later.




          Instead, try $$left| frac{y-2}{y}right|=x^2.$$






          share|cite|improve this answer























            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
            });


            }
            });














            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f801412%2fsolve-for-y-xy-y2-2y%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









            -1















            (2018-11-25) "Amusing" revenge downvote, four years later.




            Instead, try $$left| frac{y-2}{y}right|=x^2.$$






            share|cite|improve this answer




























              -1















              (2018-11-25) "Amusing" revenge downvote, four years later.




              Instead, try $$left| frac{y-2}{y}right|=x^2.$$






              share|cite|improve this answer


























                -1












                -1








                -1







                (2018-11-25) "Amusing" revenge downvote, four years later.




                Instead, try $$left| frac{y-2}{y}right|=x^2.$$






                share|cite|improve this answer















                (2018-11-25) "Amusing" revenge downvote, four years later.




                Instead, try $$left| frac{y-2}{y}right|=x^2.$$







                share|cite|improve this answer














                share|cite|improve this answer



                share|cite|improve this answer








                edited Nov 25 at 17:55

























                answered May 19 '14 at 11:28









                Did

                246k23220454




                246k23220454






























                    draft saved

                    draft discarded




















































                    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.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f801412%2fsolve-for-y-xy-y2-2y%23new-answer', 'question_page');
                    }
                    );

                    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







                    Popular posts from this blog

                    Le Mesnil-Réaume

                    Ida-Boy-Ed-Garten

                    web3.py web3.isConnected() returns false always