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plot the 2D curve that is a solution to a nonlinear equation
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I want to find the dimensions of a beam with a rectangular cross section
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/537126/image.png)
that has equal torsional and bending stifnesses. The bending stiffness is
and the torsional stiffness is
. Where
![1 / (E * Ix)](https://www.mathworks.com/matlabcentral/answers/uploaded_files/537131/image.png)
![1 / (G * JT)](https://www.mathworks.com/matlabcentral/answers/uploaded_files/537136/image.png)
the equation
can be expnaded to the nonlinear polinomial equation:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/537156/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/537161/image.png)
now assuming ν is 0.275, I want to find all the [h, w] points or curves satifying the above equation in [0, 2] and [0, 50] range for h and w respectively.
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