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Fourier Transform for triangular wave



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern)Derive Fourier transform of sinc functionFourier transform of $f(x)=exp(-|x|)operatornamesgn(x)$fourier transform of sinc functionHow to develop the Fourier Transform in my mind now that I know the Fourier Seires?Fast fourier transform and nyquist frequencyFourier transform of divergent function.A more elegant way to find the Fourier transformHow can I find the Fourier transform of constant value like $1$.Fourier Transform of triangle function 𝑥(𝑡)=Δ((t-1)/2)Hints to Fourier analysis problem










0












$begingroup$


Could someone tell me if I've worked this out right? I'm unsure of the process, especially the final parts where I convert it to a sinc function.



triangle wave



Please let me know if I've made mistakes anywhere else too.










share|cite|improve this question











$endgroup$
















    0












    $begingroup$


    Could someone tell me if I've worked this out right? I'm unsure of the process, especially the final parts where I convert it to a sinc function.



    triangle wave



    Please let me know if I've made mistakes anywhere else too.










    share|cite|improve this question











    $endgroup$














      0












      0








      0





      $begingroup$


      Could someone tell me if I've worked this out right? I'm unsure of the process, especially the final parts where I convert it to a sinc function.



      triangle wave



      Please let me know if I've made mistakes anywhere else too.










      share|cite|improve this question











      $endgroup$




      Could someone tell me if I've worked this out right? I'm unsure of the process, especially the final parts where I convert it to a sinc function.



      triangle wave



      Please let me know if I've made mistakes anywhere else too.







      fourier-analysis triangles integral-transforms






      share|cite|improve this question















      share|cite|improve this question













      share|cite|improve this question




      share|cite|improve this question








      edited Mar 27 at 18:59









      Glorfindel

      3,41381930




      3,41381930










      asked Mar 4 '14 at 18:03









      user2802349user2802349

      2416




      2416




















          1 Answer
          1






          active

          oldest

          votes


















          1












          $begingroup$

          The mistake on the last step:
          $$
          frac6sqrt2pi left[ frac sin^2frac3omega2frac3omega^22 right]
          =
          frac6sqrt2pi left[ frac sin^2frac3omega2frac23left(frac3omega2right)^2 right]
          =
          frac9sqrt2pi left[ frac sinfrac3omega2frac3omega2 right]^2
          =
          frac9sqrt2pi rm sinc^2frac3omega2
          $$






          share|cite|improve this answer









          $endgroup$












          • $begingroup$
            Thanks so much. I was unsure about how sinc's worked with they were squared. Does the solution look right to you for a triangle wave of this kind? :(
            $endgroup$
            – user2802349
            Mar 4 '14 at 18:20










          • $begingroup$
            The answer is correct now.
            $endgroup$
            – bcp
            Mar 4 '14 at 18:27











          Your Answer








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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          1












          $begingroup$

          The mistake on the last step:
          $$
          frac6sqrt2pi left[ frac sin^2frac3omega2frac3omega^22 right]
          =
          frac6sqrt2pi left[ frac sin^2frac3omega2frac23left(frac3omega2right)^2 right]
          =
          frac9sqrt2pi left[ frac sinfrac3omega2frac3omega2 right]^2
          =
          frac9sqrt2pi rm sinc^2frac3omega2
          $$






          share|cite|improve this answer









          $endgroup$












          • $begingroup$
            Thanks so much. I was unsure about how sinc's worked with they were squared. Does the solution look right to you for a triangle wave of this kind? :(
            $endgroup$
            – user2802349
            Mar 4 '14 at 18:20










          • $begingroup$
            The answer is correct now.
            $endgroup$
            – bcp
            Mar 4 '14 at 18:27















          1












          $begingroup$

          The mistake on the last step:
          $$
          frac6sqrt2pi left[ frac sin^2frac3omega2frac3omega^22 right]
          =
          frac6sqrt2pi left[ frac sin^2frac3omega2frac23left(frac3omega2right)^2 right]
          =
          frac9sqrt2pi left[ frac sinfrac3omega2frac3omega2 right]^2
          =
          frac9sqrt2pi rm sinc^2frac3omega2
          $$






          share|cite|improve this answer









          $endgroup$












          • $begingroup$
            Thanks so much. I was unsure about how sinc's worked with they were squared. Does the solution look right to you for a triangle wave of this kind? :(
            $endgroup$
            – user2802349
            Mar 4 '14 at 18:20










          • $begingroup$
            The answer is correct now.
            $endgroup$
            – bcp
            Mar 4 '14 at 18:27













          1












          1








          1





          $begingroup$

          The mistake on the last step:
          $$
          frac6sqrt2pi left[ frac sin^2frac3omega2frac3omega^22 right]
          =
          frac6sqrt2pi left[ frac sin^2frac3omega2frac23left(frac3omega2right)^2 right]
          =
          frac9sqrt2pi left[ frac sinfrac3omega2frac3omega2 right]^2
          =
          frac9sqrt2pi rm sinc^2frac3omega2
          $$






          share|cite|improve this answer









          $endgroup$



          The mistake on the last step:
          $$
          frac6sqrt2pi left[ frac sin^2frac3omega2frac3omega^22 right]
          =
          frac6sqrt2pi left[ frac sin^2frac3omega2frac23left(frac3omega2right)^2 right]
          =
          frac9sqrt2pi left[ frac sinfrac3omega2frac3omega2 right]^2
          =
          frac9sqrt2pi rm sinc^2frac3omega2
          $$







          share|cite|improve this answer












          share|cite|improve this answer



          share|cite|improve this answer










          answered Mar 4 '14 at 18:09









          bcpbcp

          304112




          304112











          • $begingroup$
            Thanks so much. I was unsure about how sinc's worked with they were squared. Does the solution look right to you for a triangle wave of this kind? :(
            $endgroup$
            – user2802349
            Mar 4 '14 at 18:20










          • $begingroup$
            The answer is correct now.
            $endgroup$
            – bcp
            Mar 4 '14 at 18:27
















          • $begingroup$
            Thanks so much. I was unsure about how sinc's worked with they were squared. Does the solution look right to you for a triangle wave of this kind? :(
            $endgroup$
            – user2802349
            Mar 4 '14 at 18:20










          • $begingroup$
            The answer is correct now.
            $endgroup$
            – bcp
            Mar 4 '14 at 18:27















          $begingroup$
          Thanks so much. I was unsure about how sinc's worked with they were squared. Does the solution look right to you for a triangle wave of this kind? :(
          $endgroup$
          – user2802349
          Mar 4 '14 at 18:20




          $begingroup$
          Thanks so much. I was unsure about how sinc's worked with they were squared. Does the solution look right to you for a triangle wave of this kind? :(
          $endgroup$
          – user2802349
          Mar 4 '14 at 18:20












          $begingroup$
          The answer is correct now.
          $endgroup$
          – bcp
          Mar 4 '14 at 18:27




          $begingroup$
          The answer is correct now.
          $endgroup$
          – bcp
          Mar 4 '14 at 18:27

















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