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4
votes
4answers
119 views

Find maximum according to a parameter

I am new to Mathematica. I want to find the maximum of the functions: ...
1
vote
1answer
60 views

Transpose Error

I have this code: ...
0
votes
1answer
36 views

Why am I getting errors from NMaximize? [closed]

I tried to use the function that is given in 1 in order to get the FWHM of some expression I got from solving a system of linear equations. This is the function for calculating FWHM: ...
0
votes
1answer
53 views

How to optimize this script?

fx8350, 16Gb ram just need to solve this: 13, 19, 19, 16, 26, 33, 26, 31, 5, 24, 21, 34, 35, 35, 35, 20, 7, 12, 18, 17, 6, 8, 15, 24, 2, 17, 15, 22, 29, 15, 21
2
votes
2answers
130 views

“Forcing output of a function to be Real in Mathematica” Non-linear optimization

I am trying to solve a Nonlinear optimization problem with Mathematica. Since the maximization problem includes exponentiation with fractional power, the result generates the complex numbers that stop ...
0
votes
0answers
84 views

solving the game of fiver

Up to an error by myself, the following code is an implementation of the mixed integer linear programming of the game of Fiver : ...
0
votes
1answer
103 views

Non-linear optimization giving error NMaximize::nrnum [closed]

I am trying to solve the following non-linear optimization problem: Here is my code: ...
0
votes
0answers
74 views

FindMinimum giving error FindMinimum::infeas:

I'm trying to find the minimum y-coordinate of a point which lies on a side of an equilateral triangle. FindMinimum doesn't work when I change the position of the ...
2
votes
1answer
142 views

How do I use FindMinimum with the LevenbergMarquardt method?

Below is my program. I don't know how to define the function f to make it work. Another question: When I define f as a vector ...
0
votes
1answer
40 views

Function with numerical integrals, Plot3D works but NMaximize doesn't [duplicate]

I have the following problem: I have a function enter code hereH depending on two numerical integrals g and ...
0
votes
2answers
90 views

FindMinimum yields result, but still issues MachinePrecision digits error [closed]

I'm writing a bit of code for a project. I am attempting to find the minimum x-value for a function, which I did get, but Mathematica still threw an error at me. My code is as following: ...
1
vote
1answer
113 views

Getting error NMinimize::nnum: in quantum physics code [closed]

The following code generate the error: NMinimize::nnum: The function value Ω[42/125, 0,1.91862121487240651285721, 1.71668875337901960520526] is not a number at {Δ, Σ} = {1.91862121487240651285721, ...
1
vote
2answers
168 views

Need advice on how to use FindFit

I have written the following code in Mathematica ...
0
votes
1answer
36 views

Minimize Function working online but not on desktop

Minimize[((2 p + 1)*Log [2] + (2 p)*Log [p] + (2 - 2 p)* Log [(1 - p)])*(-(2 p)*Log[p] - (1 - 2 p)*Log[(0.5 - p)])^-1, p] This function is working online but ...
2
votes
1answer
67 views

Finding the Maximum Value of a Function as an algebraic expression

I am trying to use Mathematica to find the following maximum value: $$\max_{0<\lambda< 1}\left| \frac{\lambda^{1-2p}}{(\lambda+\alpha)^2}\right|$$ where $0<p<1/2$ and $\alpha>0$ I ...
5
votes
1answer
245 views

Getting message Maximize::ztest: — how should I deal with it?

I am working on a maximization problem of the form Maximize[{f, cons}, {x, y, ...}] Mathematica outputs a warning and a result. The warning is Maximize::ztest:...
0
votes
0answers
63 views

Trying to Minimize the following function but getting “scalar-valued” error

I have a setting where I have written down an obj function as follows: ...
4
votes
1answer
80 views

Why am I getting different answers for expressions containing x^(1/2) and x^(0.5)?

I'm doing a constrained optimization function, where I maximize a function with two arguments subject to a simple constraint: ...
0
votes
1answer
96 views

How to find a maximum?

FindMaximum[1/2*Abs[(o - u)^2/(1 + o^2 + u^2 + 2*o*u + 2*o^2*u^2)]^2, {o, u}] doesn't work. It gave me that : FindMaximum::fmgz: Encountered a gradient that ...
4
votes
1answer
230 views

Goal optimization: finding the best combination of capacitors and resistors resulting in given properties

I want to edit @MarcoB answers (because the code he gave doesn't answer the question appropriately)->(the function that need to be optimised is not implemented as asked) But it seems like I am having ...
1
vote
1answer
198 views

NMinimize error: Nearest::neard:

I have this function GuessError, here's a plot assuming a single variable x, Plot[GuessError[10^x, etc..], {x, 8, 12}] , being etc some more variables which are ...
0
votes
1answer
330 views

Minimization Nminimize nnum error

I have imported data (mat is the name, 1x100 dimensional vector)and written a likelihood function for normal distribution. ...
1
vote
2answers
333 views

Maximum likelihood estimation based on frequency table

I have a frequency table of grades, I'm trying to estimate the distribution as a truncated normal distribution (a grade below 65 is a failing grade and doesn't count). Since I don't have the actual "...
2
votes
0answers
579 views

Maximizing Large Multivariable Function over Region with Parameter Constraints

Brand new Mathematica user here. I have a complicated function to maximize, and thought I would try software like Mathematica instead of taking derivatives by hand. I found some Mathematica ...
0
votes
1answer
265 views

How to save numbers that are in Mathematica messages

I have a program that calls FindDistributionParameters and I get the Mathematica message FindMaximum::eit each time I call the function. The message is FindMaximum::eit: The algorithm does not ...
2
votes
1answer
2k views

How to find local minima of a multivariate function with singularity?

I am working on a logistic regression problem which requires minimizing a cost function J[{theta0, theta1, theta2}, X, y] to find the optimal value for fitting ...