Skip to main content

All Questions

0 votes
1 answer
60 views

How to visualize triangle using a software

How to visualize (using some plotting software) the triangle inequality, $|x-z|\le|x-y|+|y-z|$, where $x,y$ and $z$ belong to some finite intervals. I am asking for general way, for example, $(x-z)^2\...
stephan's user avatar
  • 375
12 votes
2 answers
252 views

Does $\frac{1}{1-e^{-\frac{1}{e^x}}} - e^x - \frac{1}{2} $ really explode with oscillatory behavior past $x = 15$?

I was looking at the function $$ \frac{1}{1-e^{-\frac{1}{e^x}}}-e^x - \frac{1}{2}$$ I thought I had reason to believe this tends to 0 as $x$ tends to positive infinity because $$ \sum_{n=0}^{\infty} ...
Sidharth Ghoshal's user avatar
2 votes
0 answers
206 views

Wolfram Mathematica: why is the plot not visible?

simple question regarding Wolfram Mathematica: Why is the plot not showing? (See screenshot) (I am new to Wolfram Mathematica) Thankful for any input.
JosefS's user avatar
  • 67
0 votes
0 answers
19 views

How do I plot a gigantic function easily on WA?

I need to graph a gigantic function on WA, that has other functions inside it and some constants with preassigned values that come up a lot! For example: W = QbBesselK...., in which Q is an equation ...
Laura Martins's user avatar
3 votes
3 answers
199 views

Trying to duplicate in Mathematica a graph from Ordinary Differential Equations by Tenenbaum and Pollard

In the textbook Ordinary Differential Equations by Tenenbaum and Pollard they have a graph of this eqn: $x^3+y^3-3xy=0$ The graph is: I've tried: Plot[x^3 + y^3 - 3 xy = 0, {x, 0, 10}, {y, 0, 10}] ...
tomgoodell's user avatar
1 vote
1 answer
307 views

How do I plot 3D intersections of a system of inequalities using Matlab or Mathematica?

My question is inspired by the problem described here. Let us consider for example the following system of inequalities ($x,y,z\in\mathbb{R}$): $x+y+z>0$ $x^3+y^3+z^3<0$ $x^5+y^5+z^5>0$ How ...
Eldar Sultanow's user avatar
1 vote
1 answer
586 views

Understanding the Graph of a Multinomial Distribution

I am trying to understand exactly what information the graph of a multinomial distribution is supposed to convey. The thing I find strange is that a binomial distribution is graphed in two dimensions ...
user10478's user avatar
  • 1,922
4 votes
0 answers
184 views

How Can I Visualize a PDE Boundary Condition?

In this question, the comment suggests that the integration bounds in the Fourier Series should be chosen to avoid discontinuities in the boundary conditions. I am trying to produce a nice visual to ...
user10478's user avatar
  • 1,922
-1 votes
3 answers
54 views

plotting a function i

How can i plot bellow function in MAPLE or MATHEMATICA or MATLAB? $$y=0.05+0.1\cdot e^{0.01x}\cdot \cos(0.2\cdot x)$$ while $x$ can be in the range of $ -350$ to $+350$ or less. Thank you
sepide shirazi's user avatar
0 votes
1 answer
72 views

About the 3d Surface

I am creating the Enneper Surface in Geogebra with the following equations. Is the surface or equation correct, and does the Enneper surface look like this? I'm confused because Wikipedia has a ...
Pankaj Solanki's user avatar
1 vote
0 answers
797 views

best way to plot the 3D shape made by many intersecting f(x,y,z) functions?

What's the best way to use a computer to plot the 3D shape made by many intersecting f(x,y,z) functions? I was trying to do something like the following, except I still have not idea what the shape ...
DiscreteMath's user avatar
0 votes
0 answers
68 views

Plot of a function given by an integral.

I want to plot the following integral as a function of $x$ but Mathematica fails to draw it even using the numerical integration. $$f(x)=\displaystyle\int_0^{\infty } \left(\sum _{n=1}^{\infty } n^4e^{...
ersh's user avatar
  • 1,260
0 votes
2 answers
798 views

plotting surface z=x^2+y^2 in Mathematica

This should be an elementary exercise but I cannot find the solution in any books or notes. Could someone show me how to plot $z=x^2+y^2$ first in Mathematica? By hand? And, how to outward normal to ...
math101's user avatar
  • 3,095
-3 votes
1 answer
54 views

How to plot a radial cutoff functions [closed]

I want to plot the smooth positive radial cutoff function $\chi_2$ defined by $$ \chi_2(x,y) =1 \qquad(100|x-y| \le |y|), $$ $$ \chi_2(x,y)=0 \qquad(|y|\le 50|x-y|) $$ and also the function $\chi_1 = ...
Krimson A.'s user avatar
0 votes
2 answers
344 views

Wolfram mathematica show wrong function graph

I'm trying to plot this function: $\sqrt[3]{3-x}$ in Mathematica. I have tried various numbers in Y range and X range, but wolfram only shows half of the graph. Google or desmos.com plot the correct ...
Martin Cvešpr's user avatar

15 30 50 per page