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How to find total derivative by using total derivative operator?

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priya anjali
priya anjali 2021-3-2
回答： Bjorn Gustavsson 2021-3-2
I have two functions and .
I want to find the total derivative of .
where is as given in the attached file

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Bjorn Gustavsson
Bjorn Gustavsson 2021-3-2
If you have the symbolic toolbox it is just to get to work:
syms x y t
syms u(x,y,t)
syms p(x,y,t)
dudx = diff(u*p,x) % etc...
Then just to add up the different derivatives.
HTH

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