All Questions
9
questions
0
votes
0
answers
59
views
How to speed up maximization of the Solve output?
I am trying to maximize the solution of the system of algebraic equations for different values of parameters. The problem is related to the absorbing times in Markov chains.
Here is the code
...
- 1
0
votes
2
answers
220
views
Is it possible to calculate the desired area analytically?
I have the three two-variable curves $f,g,h$ with $0\leq x\leq \frac {\pi}{2} $ and $0 \leq y \leq \pi$
I use ContourPlot as
...
user80186
5
votes
2
answers
317
views
Find maximum of the output from reduce
I am trying to reduce a function in two variables($n_1$ and $n_2$) whose domain is the set of Integers. I get a long list of pairs of values for these two variables(instead of a range). This could be ...
- 295
2
votes
1
answer
140
views
Unable to use `Solve` to solve simultaneous equations, or use `Maximize` for exact maximum solution
Mathematica has found that the maximum of the following function is negative using NMaximize, but I am trying to prove that the maximum is negative (i.e. that the ...
- 47
2
votes
1
answer
2k
views
Solving coupled PDE and ODE
I want to solve a system of partial differential equation in Mathematica.
equation is:
$ y_0 = 0.5, t_0 = 30, λ_{12} = 0.3, λ_{13} = λ_{23} = 0.01, λ_{21} = 2.8 $
I am new in Mathematica. Please help ...
- 21
2
votes
1
answer
369
views
Optimization of the solution to an ODE
Apologies if this is obvious -- I'm very new to Mathematica.
I'm trying to minimize the solution to an ODE with respect to a variable. The following code generates the solution to the ODE,
...
- 63
0
votes
1
answer
215
views
Symbolic Maximization: does not work with symbolic power?
Simple question from a beginner: I seem to be unable to do maximization if the variable has a power specified symbolically instead of numerically?
...
- 175
2
votes
1
answer
320
views
Symbolic quadratic constrained maximization with non-negativity constraints?
Dear Mathematica users,
I attempted to maximize the below quadratic function K, subject to x1+x2<=A, and a series of non-...
- 23
2
votes
1
answer
174
views
Declaration of variables in large Linear Programming model with NMaximize
I want to solve a large LP problem using NMaximize. This is a small instance of my bigger problem:
$$max \sum^{4}_{t=1}(\sum^{4}_{c=1} V_{c}*f_{c,t})\\
s.t\quad
\...
- 41