Changing order of integration for integral with general bounds












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So I’m asked to change the order of integration in the double integral below. I can’t get to the answer however, I did sketch the function and y seems to reach from -1 tot 8 which is the first part of the new integral. However, I don’t know any further steps...



$X$ is between $x=y+6$ and $x=(y^2)+2y$



$Y$ is between $y=-3$ and $y=2$



$$
int_{y=-3}^{y=2}int_{x=y+6}^{x=(y^2)+2y} y , dxdy
$$



The function is $f(x,y)=y$ and I’m given the integral $dxdy$ which has a value of $-125/12$ for the given interval. How do I change the boundaries?










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    $begingroup$


    So I’m asked to change the order of integration in the double integral below. I can’t get to the answer however, I did sketch the function and y seems to reach from -1 tot 8 which is the first part of the new integral. However, I don’t know any further steps...



    $X$ is between $x=y+6$ and $x=(y^2)+2y$



    $Y$ is between $y=-3$ and $y=2$



    $$
    int_{y=-3}^{y=2}int_{x=y+6}^{x=(y^2)+2y} y , dxdy
    $$



    The function is $f(x,y)=y$ and I’m given the integral $dxdy$ which has a value of $-125/12$ for the given interval. How do I change the boundaries?










    share|cite|improve this question











    $endgroup$















      0












      0








      0





      $begingroup$


      So I’m asked to change the order of integration in the double integral below. I can’t get to the answer however, I did sketch the function and y seems to reach from -1 tot 8 which is the first part of the new integral. However, I don’t know any further steps...



      $X$ is between $x=y+6$ and $x=(y^2)+2y$



      $Y$ is between $y=-3$ and $y=2$



      $$
      int_{y=-3}^{y=2}int_{x=y+6}^{x=(y^2)+2y} y , dxdy
      $$



      The function is $f(x,y)=y$ and I’m given the integral $dxdy$ which has a value of $-125/12$ for the given interval. How do I change the boundaries?










      share|cite|improve this question











      $endgroup$




      So I’m asked to change the order of integration in the double integral below. I can’t get to the answer however, I did sketch the function and y seems to reach from -1 tot 8 which is the first part of the new integral. However, I don’t know any further steps...



      $X$ is between $x=y+6$ and $x=(y^2)+2y$



      $Y$ is between $y=-3$ and $y=2$



      $$
      int_{y=-3}^{y=2}int_{x=y+6}^{x=(y^2)+2y} y , dxdy
      $$



      The function is $f(x,y)=y$ and I’m given the integral $dxdy$ which has a value of $-125/12$ for the given interval. How do I change the boundaries?







      integration






      share|cite|improve this question















      share|cite|improve this question













      share|cite|improve this question




      share|cite|improve this question








      edited Jan 15 at 18:23









      Namaste

      1




      1










      asked Jan 15 at 17:46









      M.F. MeindertsmaM.F. Meindertsma

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