Graphs Definition and 655 Threads

I am new to this, and not understanding discrete math very well. This is one of my week 4 discussion questions. If someone could help me apply this to a life situation so I could understand this question better, please? I am a CNC Mill machinist, and I understand programming a computerized...

Homework Statement Well instead of asking the entire question, I just would like some help getting started. What equations, or even some lesson plans/examples, are out there that can help me with finding things like velocity, distance moved, force, etc on something that moves along a sin...

Consider two functions ##f\left(x, y\right)## and ##g\left(px, qy\right)##, where ##p## and ##q## are known. How can I plot the two functions on the same graph (i.e. the same axes)? The function ##f\left(x, y\right)## will have axes with values ##x## and ##y##, while the other will have axes...

Can you suggest books or any resource that will help understand DOS graph discussions in journal articles? I am reading DFT results. I try very hard to understand how their discussion is related to DOS graph presented, but I can't no matter how I reread it over and over again. :frown...

Homework Statement If f(x)=|x-1/2|-5 determine g(x)=2f(-x+(3/2)) Homework Equations The Attempt at a Solution Well, I tried to factor out the k-value in the g(x) formula. So I was left with: g(x)=2f(-1)(x-3/2) Then I multiply f(x) by 2 and am left with: g(x)=2|x-(1/2)|-10 Then I subtract...

Hello! (Wave) An independent set of a graph $G=(V,E)$ is a subset $V' \subseteq V$ of vertices such that each edge in $E$ is incident on at most one vertex in $V'$. The independent-set problem is to find a maximum-size independent set in $G$. Formulate a related decision problem for the...

Greetings, I have some questions about ln(x) and e^x graphs , with figuring out Domain , range and line of asymptote. Q1) How can I know if this graph is ln(x) or e^x (I thought it was e^x graph since there's no x-axis intercept , however the answer in marking scheme is: Domain : xεR , x>-3...

I have an original function ##z_{xy}## that I converted into cylindrical coordinates, now denoted ##z_{rθ}##. I have shown the steps I took to get here in the image file posted named "Work." Now, I have taken that work and converted it into code to plot in Python. I plotted it in another piece...

Homework Statement Using the diagram for the I-V characteristic of a semi-conductor (attached). Answer the following questions: 1. Why is the resistance of an I-V characteristic not determined by the gradient of the graph 2. Explain why the temperature of semiconductor increases 3. Explain why...

Homework Statement Homework Equations E= kq/(r^2), E*dA = Q/e0 The Attempt at a Solution Typically I understand how to interpret basic graphs such as going for V (potential) vs x graph to Electric field vs x graph by finding the slope of V since E= -grad V...and from their it's basic...

How could you graph a potential energy vs. time graph only knowing the position vs. time graph and the velocity vs time graph for a hanging object oscillating up and down on a string?

http://postimg.org/image/pb0eu3ap3/ So I've got this graph, and magnitude, M, depends on the number of points, N,... but it shouldn't. http://postimg.org/image/pb0eu3ap3/ The line of best fit is... M = a*N ^b It's been a while since I studied, but knowing their relationship would it be...

So i have been given a practical for a non-hookean material i.e. polymer, we were to add weights progressively and then taking them off one by one. After doing so i plotted the weight attached to the polymer vs the length stretched for both adding and removing the weights on the same graph. The...

Homework Statement Given the eqn x=2, y=sin(t), z=cos(t), draw this function in 3-space. Homework Equations ABOVE^ The Attempt at a Solution I did this: x^2+y^2+z^2=2^2+(sin(t))^2+(cos(t))^2=5 Therefore we get x^2+y^2+z^2=5 Which is the eqn of a sphere with radius root5. My friend said it's...

The question is `For the same time interval , how did the area beneath the velocity-time graph compare with the displacement of the cart? How should it compare?` I don't understand what they`re asking me to do, please help.

Homework Statement Hi everyone, I am doing a lab currently (and it looks like a few other people on here have had similar questions...) and I'm having trouble with one of the concepts. I had to drop a ball from a height and measure the movement with a motion sensor, which was graphed with the...

Homework Statement G(t)=1/2(t^2-4t) The Attempt at a Solution Since this is a polynomial it's all real numbers for domain y-int: G(0)=1/2(0^2-4(0) y-int=(0,0) x-int: 0=1/2(t^2-4t) 0=(1/2)t(t-4) Not sure... And not sure about the vertex. I know the formula -b/2a but how do i find those two...

1. It's a displacement time graph with coordinates (0,0), (3,-3),(5,-3), (9,5) The lines are all linear. The question first asks 'Calculate the velocity for each section 0-3s, 3-5s,5-9s. I know how to do that part (it's -1m/s, 0m/s, and 2m/s). But the other part of the question asks: What...

Hello, I would like to know which sotfware physicists (or other scientists) use to make nice pictures for presentations to students, scientists or general public. I would like to make good presentations without spending a day for drawing a simple image. For example if I want to explain Riemann...

I'm aware that in order to find the hole in a graph, you need to factor both the numerator and denominator, and look for terms that cancel out. However, is it merely just looking for a term that cancels out, or is it more specifically a term that cancels out and makes the numerator equal to...

Why Graphing Tools doesn't represent hole in a graph of a function. A Hole at a point in a graph is point where function is not defined.Suppose there is a function ##\frac{x}{\root{x-1}-1}## Its should be like this But online tools and even my android graphing tool app shows graph like this...

Homework Statement [/B] The problem is stated in dutch and dutch is my first language. I will try to translate it all as accurately as possible. Imagine the following two functions: f(x)=x^3-4x^2 and g(x)=2x^2. Algebraically calculate the area in between the two graphs. Homework Equations...

Hi, I need help to add an exponential trendline on my graph. I have three graphs and I have succeeded with the first one but somehow the exponential trendline will not show on the two other graphs even though I have selected the option multiple times. I also tried to re-do the graph in a new...

Homework Statement Hi there. For my A2 physics coursework I have been doing an experiment into stokes law, in which I dropped ball bearings of various diameters into a tube filled with a liquid, worked out their terminal velocities and then used Stokes Law to calculate the viscosity of the...

Homework Statement Estimate the value for Youngs Modulus from the two following graphs: Graph 1: Plot a graph of depression in metres (D) against load in kilograms (M) Graph 2: Plot a graph of log_10(D) against log_10 of Length of cantilever. Homework Equations [/B] D = 4*L^3*m*g / Y*a*b^3...

< Moderator Note -- thread moved from General Physics to Homework Help forum > If a ball is projected vertically upwards say with a velocity V. Case 1: Without air drag Case 2: With air drag What will be the difference in v-t graphs and the motion of the ball Air drag D=bv (b is a constant,v...

I have the inequalities 2<x<6,\quad 1<y<5,\quad y-2\le2x, \quad-2y\ge8-4x I have to solve these and plot it in a graph and show the region where they satisfy. I understand you have to find the common area and shade it. How do you find the points to plot for 2<x<6\quad and\quad 1<y<5 I think I...

Let L be the level number of a bipartite graph G, and so L1 be the first level of n1 vertices, L2 be the second level of n2 vertices, ... Lk be the kth level of nk vertices. Then a bipartite graph G12 is created by a combination of L1 and L2, G23 is of L2 and L3,...,Gij is of Li and Lj. The...

Homework Statement Explain the shape of the velocity-displacement and acceleration-displacement graphs for an object undergoing simple harmonic motion. The graph is attached to this thread Homework Equations v = wsqrt(A^2-x^2) where w = angular frequency, A = amplitude and x = displacement...

I found this site on Reddit. Not that useful but fun to play around with. :) Here is our site name graphed.

I get why it's a parabola because of the x^2 (for every value of x, y is the square of that number), but why does it shift to the left (and down as well) when I add x?

I am reading Srednicki's book and I am stuck at this point of calculating symmetry factors for Feynman's Graph in the context of dealing with interacting scalar field. First of all my question is what is the standard procedure to calculate it. The way Srednicki has talked about it is that if...

Hello PF, New to PF, first post! I graduated with a BS in Chemistry in 2010, and I have started my graduate studies in Materials Science. My physics/electrical engineering knowledge is a little shaky, and I am trying to catch up. During group meetings, a lot of graduate students are...

Homework Statement http://imgur.com/U3NBDS7 The Attempt at a Solution g(x) = x^2 (x-5)^2 (-1)*(x-5)^2 (-1)*(x-5)^2 - 2 = h(x) h(x) = -(x-5)^2 - 2 Does this look correct to you?

My problem is to show that, for $d\geq 2$, the girth of the d-dimensional hypercube graph, I'll call it $H_d$, is $4$. I'm pretty sure I should use induction, since the base case is simply a cycle of length $4$. Then I suppose that the claim is true for some $d\geq 2$. So I need to show that...

Hi Are these two graphs EQUAL to each other? Exactly If a Graph contains the left graph in image as a sub-graph then it can not be an edge graph. the question is about the right one, Is it equal with left one? if yes, then does it mean If a Graph contains the right graph in image as a...

Homework Statement A point charge +q is placed near a curved, charged, insulating rod as shown at the left below. (I'll just draw it, I don't have access to a camera at the moment) The charge is placed near the center of the curvature of the curved rod. For each of the five cases A-E, the...

Hi there, I need to draw the Feynman graphs for D→KK meson . I would be appreciate if anyone can help me. Thank you so much.

Hey guys, I'm having trouble with this problem set I'm working on at the moment. I'd appreciate some help with this question: (I'm only asking about question one. Please ignore question two) I'm having trouble sketching this graph out. If f' and f'' are not defined at 2, does that mean that...

Two M-files one contains differential equations and another one to run and plot the graphs. since i am using ode solver, it has two files to run. THERE ARE 4 MATLAB CODES WITH 4 SEPARATE MATLAB M-FLIES BUT 2 M-FILES TO PRODUCE 3 PLOTS AND ANOTHER 2 M-FILES TO PRODUCE ANOTHER 3 GRAPHS. BUT I...

Just one simple doubt here. Can we use different scales on the x and y axes be used for denoting linear equations/inequalities? :/

Plot a continue function graph with the following data o properties f(4)= 0 f of (-2) = 0 f of second derivative in 1 = 0? f of first derivative in (3) = 0 f de second derivative in 2 =0 2nd derivative (x) > 0 and (1,2) 2nd derivative (x) < 0 in x < 1 and x>2 see my graph is it correct?? where...

Plot a continue function graph with the following data o properties f(0)= 0 f of (-1) = 0 f of first derivative in 0 = 0? f of first derivative in (1) = 0 first derivative (x) > 0 in x >1 and (0,1) first derivative (x) < 0 in x < -1 and -1<x<0 see my graph is it correct?? where am I wrong

I have this book but the page 97 is missing. Can anyone sen me picture of it? Thanks

We've just started learning about ψ in the quantum mechanics section of our atomic structure chapter. So while reading, I found these graphs where they used certain units along the y-axis for the graphs for ψ and radius (in nm), and ψ^2 and radius. What units are these exactly? My chemistry...

I am reading Steve Awodey's book of category theory. I am, at the moment, studying Section 1.7 on free categories and graphs ... Under the heading Free Categories on page 20 we have the following text: I am struggling to get a clear picture of the two functions of a graph, namely: s ...

12a) Sketch the sinusoidal graphs that satisfy the properties below: Period: 4 Amplitude: 3 Equation of the Axis: y = 5 Number of Cycles: 2 So, I know how to graph sinusoidal functions, but I can't figure out the max and min that would satisfy both the equation of the axis and the amplitude listed.

Hi all Could anyone help with this question. Any help is appreciated!

I have to say if each reactant is first, second or zeroth order. Now, I know that usually, we have plots of ln([]) over time. But my teacher wants to trick me. Here is how I do this: Take two data points: convert them to [ ] and normal rate (remove the ln() function). Compare the two...

sir in the graphs of electric field due to binary charge configuration why some curves are below x-axis and some are above x axis