All Questions
5
questions
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54
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Finding values of constants for which 1st and 2nd order derivatives of a function vanish
I'm trying to find critical values of some constants $v_c$ and $T_c$, for which holds the equality below:
$$\bigg(\frac{\partial P}{\partial v}\bigg)\biggr\rvert_{v=v_c,\; T=T_c}=0,\quad \bigg(\frac{\...
- 27
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18
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Using FindArgMax in NSolve with dependant variables
I have a function for a current through a series circuit containing a capacitor(c) and a resistor(r) and a battery(Ebatt) when the capacity increases from c0 to c.
...
0
votes
1
answer
88
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Finding the minimum points of a discrete trigonometric equation
Basically I'm trying to solve the equation
$$A\Big(\sin(\theta_a-\theta_{a+1}) + \sin(\theta_a-\theta_{a-1})\Big) + B\Big(n_a^z \sin(\theta_a) - n_a^x \cos(\theta_a)\Big) = 0$$
subjected to the ...
- 159
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votes
1
answer
51
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How can I calculate all of the points of my functional at once and export the results to a file?
I have the following functional, it depends of n, m and U, so I want to automatize the calculations for all the regimes and be able to export it in a way I can copy and the past the values easily.
<...
- 137
1
vote
0
answers
102
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Dynamical Evaluation error and infinite loop? [closed]
I'm trying to set up a solver to solve for the chemical potential
given the constraints (particle number and magnetization).
The function MuandShift finds the ...
- 11