# Questions tagged [parameters]

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### Find the parameter in NDSolve giving the desired solution

I find myselef in choosing by hand the right parameter that let ParametricNDSolve return the desidered solution. I'm sure there is an easy alternative, but I can't ...
1 vote
58 views

### NonlinearFit with series coefficients

I have a set of data: ...
79 views

### Plotting the parameter space corresponding to a solvable equation

I am considering a function $f(T, c_1, c_2)$ for which I would like to plot the region in the $c_1$ and $c_2$ parameter space that corresponds to the values of $c_1$ and $c_2$ such that $f(T)=0$ has a ...
43 views

### How to organise definitions that contain named parameters

I have lots of definitions of (usually numeric) quantities that depend on parameters; they're mostly matrices (in the actual code, there are many more definitions): ...
67 views

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269 views

### Problem with solving a linear ODE with a parameter

I have been struggling with the following ode for several weeks, but I fail to solve it. So I post this question and my attempts and expect someone here could give some suggestions. First, define an ...
53 views

### Integrate and InverseFunction

I solve an easy example to check that Mathematica can understand the difference between ArcTan and ArcTanh but as you see here I can't get Arctanh??!! Even I don't know why the inverse function is not ...
1 vote
45 views

### How to fix a parameter in SolveAlways

In expression: SolveAlways[f1(a)+f2(b)x+f3(c)x^2+f4(d)x^3==f5(d)x^2+f6(e),x] Functions fi are known. How do I tell mathematica that d is a fixed constant?. I want ...
26 views

### Comparing parameter regimes workflow

I have some code that relies on some parameters. I pick a set of parameters, calculate some things, solve some differential equations then plot various things with the solution. Ideally I'd like to ...
1 vote
184 views

### How to specify the domain of a parameter?

There is a similar post: How to specify the domain of a variable?, but it doesn't work well for me. I want to evaluate the integral below, with a parameter $\gamma$. The result is obviously different ...
81 views

### Table of surface Parametric draw

I'm trying to reproduce this kind of graph for a spherical cap, with different span ratios. I tried with this: ...
112 views

### Solve Differential Equation with Boundary Conditions (lengthy equation)

I have a lengthy equation to be substitute into a differential equation. I used DSolve to generate the output. However, it took me more than 3 hours and it still running. The DE is the convective-...
1 vote
53 views

### Problem with ParameterFitting:""The function value...is not a list of real numbers..."

I'm trying to use the data: ...
65 views

### Restrict the domain of a function (and plot) it) when it depends on the value of a parameter

I know similar questions have been asked, but I am very new at Mathematica and other questions/answers are quite complex and do not suit the code I want to write. I want to restrict the domain of the ...
72 views

### Solve in parametric equations in term of a set of parameters

I am not sure the title is right but let me explain. I have the relations ...
28 views

### Logarithmic NonlinearFit with 10 parameters? Is Not a Real Number

I am trying to fit a collection of data with a fairly complicated function, and have been running into some errors. I am very new mathematica user, and am not really sure where I am going. This is my ...
50 views

### How to make the third parameter optional and adding some condition?

I have a function as follows. The function has 3 parameters. Now I would like to make the third parameter i optional. So you call call it like ...
1 vote
55 views

1 vote