On 07/18/2017 09:00 AM, Maxi Miller wrote:
So, you suggest to calculate first the first equation, and then use the result
for the second equation?
No -- I suggest substituting
d/dt f(A)
by
f'(A) d/dt A
and then using the first equation to substitute d/dt A in that equation. Just
get rid of the time derivative altogether.
Best
W.
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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