Plotting — 399 discussions

Hello! I want to plot this function on MATLAB: f(t)=1 si 0<=t<=1 f(t)=0 otherwise Please help me! How to do it? I tried so much things it doesn't work!

Homework Statement Plot the following point: B(-2,3,5) The Attempt at a Solution If I were to plot (-2,3,5), when I make my first movement of -2, it does not move anywhere on the y-axis correct and when I am moving on my Y axis, There is no movement in the z axis?

Homework Statement The distribution function of a real random variable X is given: F(x) = 0 : x < 0 x/2 : 0 ≤ x < 1 2/3 : 1 ≤ x < 2 11/12 : 2 ≤ x < 3 1 : 3 ≤ x (a) Plot this distribution function. (b) What is P( X > 1/2 ) ? (c) What is P( 2 < X ≤ 4 ) ? (d) What is P( X <...

Hi all. Is there a way to plot both functions and coordinates/points on the same graph in Mathematica? The various functions for plotting each seem very incompatible. I would like to compare a probability function to Monte-Carlo-method simulation results. Also, out of curiosity, do...

Hi, I'm having a lot of trouble finding a tutorial that would allow me to plot a set of data using octave. Everything seems to be teaching me how to plot functions. but say I have a list of data saved in a text file. How do I turn this into an xy scatter? Is this possible using octave? I...

Hi i have the differential equation \frac{d^{2}}{dt^{2}}X(t) +(A+B\frac{sin^{2}(mt)}{mt})X(t) I have tried by hnd to solve this and am getting knowhere does anyone know how to solve it and then plot X against t (where the constants A, B and m will be arbitrarily added), possibly using maple? I...

I have a table of 100 data points. I want to plot this on Matlab. Is there any other way for me to do this other than making an array for each column and then plotting it?

On a graph where Ic is plotted against Vce for a range of base currents, does the line represent the load resistance (Rc)?

hello.can anyone help me to plot this function in matlab Q=quad(@(omeg)myfun(omeg,x,t),-20,20).im not sure if this is correct.my m file function goes like that function y= @myfun(omeg,x,t) y=besselj(1,omeg.*x).*cos(omeg.*t).*omeg; thanks in advance

1.Use MATLAB to demonstrate how the series converges to the triangular wave. 2.Generate a plot(properly labelled) with 6, 10 and 30 terms for a value of T = 2. 2. *A triangular wave with period T may be written as: 1/(2n+1)^2 * cos((2n+1)*w0*t) (this is a series, n starts at 0 and goes...

Hello, I am tasked with plotting the polarization state of a laser (basically I've made a polarimeter), but I really have no idea where to go at this point. Below is a sample of the program I have written with some real data that I just took from a laser. I have the intensity profile as a...

Good Day Everybody, Please assist me on these problems 1. I wish to put six plots on the same plot using matlab. The details of each plot are stated below PLOT 1 x axis range 0:1 y axis range 0:1 PLOT 2 x axis range 0:1 y axis range 0:1 PLOT 3 x axis range 0:1 y axis range...

Hi everyone, Im currently following an example of this paper: http://ocw.mit.edu/courses/aeronautics-and-astronautics/16-07-dynamics-fall-2009/lecture-notes/MIT16_07F09_Lec18.pdf And have reached a standstill on page 5. I am trying to plot the pseudo potential of the two bodies. I have...

Hi, I have a doubt in plotting the vector field. In the post https://www.physicsforums.com/showthread.php?t=155579 it is mentioned that a vector field could be plotted for F (x,y) by, marking the (x,y) as the tail and F(x,y) as the head portion. If so, then consider the function...

Homework Statement A straight wire of electric charge truncate to length L has a linear charge density of ρ= 8 C/m. Using a computational approach calculate the electric field due to the truncated line at any arbitrary point in space. Consider L = 1 m, assume line lies along y-axis with...

Hi, So here's my latest problem as I get to grips with Mathematica. I will give a simpler version of the one I am actually doing. I started with a closed set of differential equations. Consider the following equations a'(t)=P*b(t) b'(t)=P^{2}*a(t) with known initial conditions and P is a...

I need to make two plots of volume as a function of time vs pressure as a function of time. When plotted the graph will have an enclosed area. I am having trouble on how to have MATLAB plot these two functions against each other. My experience with MATLAB is having a function defined in a...

Hi all, I would like to be able to plot this function in MATLAB \mathcal{V} (\phi_{1}, \phi_{2}) = m^2(\phi_{1}^2 + \phi_{2}^2) + \lambda( \phi_{1}^2 + \phi_{2}^2)^2Where \phi_{1,2} , m^2 , \lambda \in \mathbb{R} and \lambda > 0 I am aware that the cases m^2 > 0 and m^2 < 0 yield two...

Hello, How may I plot the trajectory of a particle whose movement vectors are given as: x(t) = Rwt - Rsin(wt) y(t) = R - Rcos(wt) I have tried squaring both x and y and adding them, to infer some sort of circular trajectory, to no avail. Could someone please assist/make a suggestion?

$$ u(x,t) = \frac{1}{2}\int_{x - t}^{x + t}g(s)ds = \begin{cases} t, & (x,t)\in R_1\\ \frac{1}{2}(1 - x + t), & (x,t)\in R_2\\ \frac{1}{2}(x + t + 1), & (x,t)\in R_3\\ 1, & (x,t)\in R_4\\ 0, & (x,t)\in R_5,R_6 \end{cases} $$ where \begin{alignat*}{3} R_1 & = & \{(x,t):-1 < x - t < 1\text{ and }...

I have plotted two approximately sinusoidal waves in one Excel graph. Both waves are voltage, on the y-axis, against time the x-axis. Though both waves are not identical, being out of sync a little. The first wave has quite a lot more readings which make it than the second wave. If I...

f[r_][x_] := 1 + r*x + x^2; A = Table[ cps[r_] = x /. Quiet[Solve[f[r][x] == 0, x], Solve::ratnz], {r, -5, 5, 0.01}]; I want to then tell mathematica to check the derivative of f with each value from the table, plot the values, but make the lines where there derivative in less than 0...

Hello I am trying to calculate the n-point DFT of a signal using fft where n=512 and plot it in matlab. The signal is a separate file that I have read into matlab. I am able read and plot the first 512 values of the signal but when I try to get the dft of the signal and plot it the outcome does...

How do I plot something like (x-4)(x-5)(x-6)? I've tried: x = -6:0.01:6; y = (x-4)*(x-5)*(x-6); plot(x,y) It's giving me the error: Error using * Inner matrix dimensions must agree.

Hello all, I'm rather new to the world of computational physics and I'd just like some advice on which program I can use for plotting trajectories. I'd prefer 3D, if possible, but 2D would at least be a good start. I'm a little familiar with python, and I can get results from my .py...

My mat lab skills are pretty low, basically i want to know how to make a waveform using 1000 points of data. if the data is for example y = 1 for 0<n<0.1 y = 2 for 0.1<n<0.5 y = -5 for 0.5 < n < 1 so how could i plot this waveform using 1000 points of data cheers

A3.m: %x = 0:pi/100:2*pi; %y = sin(2*x); %z = 2*cos(2*x); %plot(x,y,'k',x,z,'--b') %title('Plot of f(x)=sin(x) and it''s derivative') %xlabel('X-axis') %ylabel('Y-axis') %legend('sin(2x)','2cos(2x)') x = -2:0.01:2 y = f2(x) plot(x,y) f2.m: function F = f2(x) F(1) =...

How do I plot modulus functions in TI-89 Titanium? When I enter y1(x)=mod(x), in the y= editor, an error message turns up saying 'Too few arguments'.

$$ p(r,\theta) = \frac{1}{2\pi}\sum_{n = -\infty}^{\infty}r^{|n|}e^{in\theta} = \frac{1}{2\pi}\left[\frac{1 - r^2}{1 - 2r\cos\theta + r^2}\right]. $$ So I produced the graph but it won't animate. MyR = Table[r, {r, 0, 1, .1}]; u[\[Theta]_] = 1/(2*Pi)*((1 - r^2)/(1 - 2*r*Cos[\[Theta]] + r^2))...

Homework Statement Does anyone know how to do this? Let's say I had the equation: f(t) = |2t, 0≤ t < 2 |(t^2)-3, 2≤t how would you plot this over 0≤ t ≤4 in Matlab? Homework Equations - The Attempt at a Solution I've tried ezplot but i can't manage getting both...

Plotting Laplace Functions in Matlab - Help? SORRY I MEANT LAPLACE FUNCTIONS Homework Statement so we have a function f(t) = |2t, 0≤ t < 2 |(t^2)-3, 2≤t how would you plot this over 0≤ t ≤4 in Matlab? Homework Equations - The Attempt at a Solution I guess you could...

$$ u(x,y) = \frac{4}{\pi}\sum_{n = 1}^{\infty}\left[\frac{\sin(2n - 1)\pi x\sinh\left[(2n - 1)\pi (1 - y)\right]}{(2n - 1)\sinh(2n - 1)\pi} + \frac{\sin(2n - 1)\pi y\sinh\left[(2n - 1)\pi(1 - x)\right]}{(2n - 1)\sinh(2n - 1)\pi}\right]. $$ How do I construct a contour plot of this?

I'm really confused at the moment and would quite appreciate some guidance. I've got little to no background in Matlab and am needing to plot a simple pendulum. I have found the equation of motion which is q(doubledot) = -(g/l)sin(beta) I don't know how to go about this? After...

Hi, The question is the following: Another student proposes that c is proportional to d0.5 State a suitable graph that can be plotted to test this proposal. I suggested plotting log c = 0.5 log d. One of the answers the markscheme accepts is log c = log d Can anyone tell me why my...

I'm confused by Mathematica's behaviour when plotting some functions I've constructed by interpolating functions. I have three graphs (attached). The first is a plot of the family of functions; they're negative, and decreasing to zero. I tried to do a LogLogPlot to look at their behaviour as...

Homework Statement The velocity field in a flow is given by V = (x^2)*yi + (x^2)*tj. (a) Plot the streamline through the origin at times t = 0, t = 1, and t = 2. (b) Do the streamlines plotted in part (a) coincide with the path of particles through the origin? Explain. i&j are directional...

When plotting graphs in polar coordinates, how does one know when to make the graph sharp (at θ=0) (as in for the graph for r=1-cosθ) as opposed to a dimple (r=3/2 + cos θ) ?

Hi I have a dataset which traces out a circle. The issue is that the data points are not ordered, so if I plot the set and make lines between adjacent (= "adjacent" in the sense that they are next to each other in the dataset) data points, then the plot does not look like a circle. Is...

I am very confused on how to start this problem, would highly appreciate some help! Consider the function
f(x)=   0, -1≤x≤0 2x, 0≤x≤1. The Fourier series coefficients for this function are given by [a][/0]=0.5, and for  k=1, 2, 3,...  ...

Hi, From a retired thread I (roughly) quote the following: "To plot the path that a point on the Earth takes through space, you would need to calculate these movements: The Earth relative to the Sun. The Sun relative to the Galaxy centre. The Galaxy relative to the Local Group. The...

Homework Statement I was wondering if you could help me on how to draw these on a graph (4, 0°) and (3, 27°) The Attempt at a Solution Just a hint, Please

Hi I need to plot \sin(x) and its first,third, fifth power series expansion on the same plot. here's what I did T[n_,x_]:=Normal[Series[Sin[x], {x, 0, n}]] Plot[{Sin[x], T[1, x], T[3, x], T[5, x]}, {x, -2, 2}] But I got following errors. General::ivar: -1.99992 is not a valid...

I am going to plot two series in Matlab. They are as following. please help me to write the appropriate code for them: 1-f(t)=(2/pi)+(4/pi)*Ʃ(1/(1-4*n^2))*cos(2*n*pi*t) -1≤t≤1 n=1 forN=200 2-f(t)=(4/0.25^2)*Ʃ(sin(0.25*n*pi)/(n*pi)^2)*sin(n*pi*t) -2≤t≤2 n=1,3,5 forN=200

I'm doing a small project for a modelling course that is showing the physics of a golf ball going through the air, drag force included. Let's say I have an interactive slider that allows me to manipulate the initial angle and velocity (a pretty common interaction) of the ball before I hit a...

Is there any good software which plots 3d graphs and vectors. I just want to plot linear 3d graphs and vectors in 3d. I don't mind paying for this but it should be reliable and easy to use.

hey guys i have a problem regarding plotting several graphs in one plot via mathematica. I want this plot's x-axis to be in a log scale so i used loglinear command. here the plot is b[a] vs. a. w[a] is part of my differential equation and it depends upon a and c. i have written the program...

I have a set of measured data. I need to plot this in MATLAB and show two graphs in one plot. Data for first graph is : [0.35,0],[0.4,130],[0.45,400],[0.5,0.11],[0.55,34] and so on. Second graph is a function. So, how to plot sequence of data in matlab? Which command should I use?

Hi, I like to think that I can generally get MATLAB to do what I want and when I want but this has got me stumped. I want to plot a free surface defined by a double integral: \eta =\frac{1}{4\pi^{2}}\int_{\mathbb{R}^{2}}\frac{\mu e^{-\mu^{2}/4}e^{i(kx+ly)}\tanh\mu}{U^{2}k^{2}-\mu...

Homework Statement Find the 6th complex roots of √3 + i. Homework Equations z^6=2(cos(π/6)+isin(π/6)) r^6=2, r=2^1/6 6θ=π/6+2kπ, θ=π/36+kπ/3 The Attempt at a Solution When k=0, z = 2^1/6(cos(π/36)+isin(π/36)), When k=1, z = 2^1/6(cos(13π/36)+isin(13π/36)), When k=2, z =...

Hello everyone, I've been in university for about 3 years now and the tool I want more than anything is something that can make plots symbolically. What I mean is if for example i have the following function: f[x]=ln[\frac{x}{β}] I want a plot that will know to plot a function that is...