Show $int_{0}^{-x}frac{t^n}{1-t}dt=(-1)^{n+1}int_{0}^{x}frac{t^n}{1+t}dt$ for $-1<x<1$.












0












$begingroup$


Show $int_{0}^{-x}frac{t^n}{1-t}dt=(-1)^{n+1}int_{0}^{x}frac{t^n}{1+t}dt$ for $-1<x<1$.



Maybe I'm not thinking straight today but I can't seem to justify the above.










share|cite|improve this question









$endgroup$












  • $begingroup$
    Seems that expansion into power series could do it.
    $endgroup$
    – xbh
    Jan 31 at 1:50
















0












$begingroup$


Show $int_{0}^{-x}frac{t^n}{1-t}dt=(-1)^{n+1}int_{0}^{x}frac{t^n}{1+t}dt$ for $-1<x<1$.



Maybe I'm not thinking straight today but I can't seem to justify the above.










share|cite|improve this question









$endgroup$












  • $begingroup$
    Seems that expansion into power series could do it.
    $endgroup$
    – xbh
    Jan 31 at 1:50














0












0








0





$begingroup$


Show $int_{0}^{-x}frac{t^n}{1-t}dt=(-1)^{n+1}int_{0}^{x}frac{t^n}{1+t}dt$ for $-1<x<1$.



Maybe I'm not thinking straight today but I can't seem to justify the above.










share|cite|improve this question









$endgroup$




Show $int_{0}^{-x}frac{t^n}{1-t}dt=(-1)^{n+1}int_{0}^{x}frac{t^n}{1+t}dt$ for $-1<x<1$.



Maybe I'm not thinking straight today but I can't seem to justify the above.







calculus






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Jan 31 at 1:48









helios321helios321

56849




56849












  • $begingroup$
    Seems that expansion into power series could do it.
    $endgroup$
    – xbh
    Jan 31 at 1:50


















  • $begingroup$
    Seems that expansion into power series could do it.
    $endgroup$
    – xbh
    Jan 31 at 1:50
















$begingroup$
Seems that expansion into power series could do it.
$endgroup$
– xbh
Jan 31 at 1:50




$begingroup$
Seems that expansion into power series could do it.
$endgroup$
– xbh
Jan 31 at 1:50










1 Answer
1






active

oldest

votes


















1












$begingroup$

Hint: use the change of variable $t = -u$.






share|cite|improve this answer









$endgroup$














    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%2f3094380%2fshow-int-0-x-fractn1-tdt-1n1-int-0x-fractn1tdt-fo%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












    $begingroup$

    Hint: use the change of variable $t = -u$.






    share|cite|improve this answer









    $endgroup$


















      1












      $begingroup$

      Hint: use the change of variable $t = -u$.






      share|cite|improve this answer









      $endgroup$
















        1












        1








        1





        $begingroup$

        Hint: use the change of variable $t = -u$.






        share|cite|improve this answer









        $endgroup$



        Hint: use the change of variable $t = -u$.







        share|cite|improve this answer












        share|cite|improve this answer



        share|cite|improve this answer










        answered Jan 31 at 1:54









        Diego Cornejo KocDiego Cornejo Koc

        314




        314






























            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.




            draft saved


            draft discarded














            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3094380%2fshow-int-0-x-fractn1-tdt-1n1-int-0x-fractn1tdt-fo%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

            MongoDB - Not Authorized To Execute Command

            How to fix TextFormField cause rebuild widget in Flutter

            in spring boot 2.1 many test slices are not allowed anymore due to multiple @BootstrapWith