Determine the branch cuts of f(z)











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Consider the function f(z) = $({z^2} + 1)^{1/2}$, that is, the principal value of the function f(z) = $({z^2} + 1)^{1/2}$.



Determine the branch cuts of f(z); check the discontinuity of the branch along the branch cuts.



How do I determine those branch cuts?










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    Consider the function f(z) = $({z^2} + 1)^{1/2}$, that is, the principal value of the function f(z) = $({z^2} + 1)^{1/2}$.



    Determine the branch cuts of f(z); check the discontinuity of the branch along the branch cuts.



    How do I determine those branch cuts?










    share|cite|improve this question
























      up vote
      -3
      down vote

      favorite









      up vote
      -3
      down vote

      favorite











      Consider the function f(z) = $({z^2} + 1)^{1/2}$, that is, the principal value of the function f(z) = $({z^2} + 1)^{1/2}$.



      Determine the branch cuts of f(z); check the discontinuity of the branch along the branch cuts.



      How do I determine those branch cuts?










      share|cite|improve this question













      Consider the function f(z) = $({z^2} + 1)^{1/2}$, that is, the principal value of the function f(z) = $({z^2} + 1)^{1/2}$.



      Determine the branch cuts of f(z); check the discontinuity of the branch along the branch cuts.



      How do I determine those branch cuts?







      complex-analysis






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      asked Nov 22 at 12:49









      Peter van de Berg

      198




      198






















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          They are where $(z^2+1)$ is negative real, so the square-root has a discontinuity.






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            1 Answer
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            1 Answer
            1






            active

            oldest

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            active

            oldest

            votes






            active

            oldest

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            up vote
            1
            down vote













            They are where $(z^2+1)$ is negative real, so the square-root has a discontinuity.






            share|cite|improve this answer

























              up vote
              1
              down vote













              They are where $(z^2+1)$ is negative real, so the square-root has a discontinuity.






              share|cite|improve this answer























                up vote
                1
                down vote










                up vote
                1
                down vote









                They are where $(z^2+1)$ is negative real, so the square-root has a discontinuity.






                share|cite|improve this answer












                They are where $(z^2+1)$ is negative real, so the square-root has a discontinuity.







                share|cite|improve this answer












                share|cite|improve this answer



                share|cite|improve this answer










                answered Nov 22 at 13:13









                Empy2

                33.4k12261




                33.4k12261






























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