Dear all,
Is there any function in deal.II that can compute all the partial
derivatives of the solution polynomial? For example,
I want to compute the following term:
[image: View the MathML source]
where \tilda{p(x,y)} is the DG solution in one cell in terms of basis
functions.
In order to get \beta, I will have to know the values of the partial
derivatives
of \tilda{p(x,y)} at quadrature points.
Do I have to use functions like
third_derivative_type
<https://www.dealii.org/8.4.0/doxygen/deal.II/classFEValuesViews_1_1Scalar.html#a2cb8fe5a7fda3abd7a971493a3eb3293>
FEValuesViews::Scalar
<https://www.dealii.org/8.4.0/doxygen/deal.II/classFEValuesViews_1_1Scalar.html><
dim, spacedim >::third_derivative ( const unsigned int shape_function,
const unsigned int q_point
)
I was wondering if there is an easy way to do that in deal.II.
Thanks in advance.
Best,
Jiaqi
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