Tagged Questions
0
votes
0answers
71 views
draw a graph of a polynomial function with variables in the denominator [closed]
I have an equation f(u,z1,z2)=0, which is a long and complicated polynomial function with u in denominator.
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1
vote
2answers
99 views
Count and plot the number of solutions in an interval
I have equations depending on one or more parameters and I want to find and plot the regions in the parameters space in which there are a specific number of solutions.
For definiteness let's ...
0
votes
1answer
63 views
Plotting query - same values on Y-axis / viewing data
I'm new to Mathematica, and have numerically solved two similar functions with the following code;
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7
votes
1answer
95 views
How to plot inequalities taking into account that points must be integers and not reals?
I have solved with Mathematica 9 the following integer inequalities using Reduce:
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0
votes
1answer
95 views
ContourPlot of a complicated function
I have the function $pot_1(x,y,z)$ which is given in analytical form. So, in order to plot the contours at the primary planes $(x,y)$, $(x,z)$ and $(y,z)$, I use the following ...
0
votes
1answer
122 views
8
votes
5answers
325 views
Create filling between two trig functions
Working with trig functions, period, amplitude, etc.
I found a worksheet at a calculus website, with some nice questions related to interpreting trig functions, at least, they provide some "fun" ...
1
vote
0answers
253 views
Calculating the mean curvature of a surface - suggestions
I am attempting to calculate the mean curvature [1, 2] of a surface defined by a function of x and y.
My function is rather ...
6
votes
3answers
233 views
Plotting $\omega(k_x, k_z)$ in $(\omega, k)$ plane with assumption of $k^2 = k_x^2 + k_z^2$
I'm currently studying atmospheric-gravity waves and their dispersion relations.
For analysis I need to plot the dispersion function:
\begin{equation}
\omega^4 - \omega^2\cdot C_s^2(k_x^2 + ...
2
votes
1answer
206 views
Vector Analysis: Why are the Grad, Laplacian and Div being evaluated to zero
For the non linear partial differential equation below, why are the Gradient, Laplacian and Divergence being evaluated to zero despite using the VectorAnalysis ...
2
votes
1answer
141 views
Defining regions for `Exclusions`
I have the following function I want to plot in 3D (For simplicities sake we can say $a=5,b=-1,c=3$.)
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1
vote
2answers
206 views
Replacing variable in an equation with an Interpolating function polynomial and plotting residual
I was trying to plot the residual for the solution of my PDE. However, I was unsure about a couple of things.
I imported the data and created an Interpolation polynomial with ...
0
votes
1answer
164 views
Iterative way to find roots of confluent hypergeometric function
I am trying to find roots of confluent hypergeometric function and I wonder if I can choose the initial guess by the choice of $\beta$.
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11
votes
4answers
354 views
How to make a Line[] with no end?
I'm trying to do this:
In this graph, the secant points are aproximated in order to become the tangent, it seems I need some kind of function which plots a line based on two points and it's points ...
18
votes
2answers
2k views
Marking points of intersection between two curves
I'm trying to illustrate the solutions numerically and graphically for an equation such as Tan[x] == x. I think I did everything ok except I wanted to mark each ...
3
votes
1answer
219 views
Selecting polynomial roots and plotting against parameters
An implicit function $f(x,k)=0$ is quadratic in $x$ and contains one
parameter $k$ which I must vary.
Using Solve, I get two real solutions for each specific $k$: ...
2
votes
2answers
473 views
How to plot an inequality?
I need some help in plotting the following inequality using Mathematica:
$$\frac{1+(x/100+0.1)\times y/100}{1.15+1.15\times(x/100)\times(y/100)}\geq 1$$
assuming $x,y\in \mathbb{Q}$, the set of ...
3
votes
3answers
253 views
Animate a position change along the curve for every iteration
I've only had few previous experiences on Mathematica before. So basically an entry-level question that harasses a rookie like me.
I made the following attempt using bisection method to calculate ...
10
votes
6answers
2k views
About multi-root search in Mathematica for transcendental equations
I have some questions for multiroot search for transcendental equations. Is there any clever solution to find all the roots for a transcendental equation in a specific range?
Perhaps ...
