Graph Definition and 999 Threads

  1. I

    How to Zoom and Pan in MS Excel Graphs?

    I have a lot pressure data (in CSV) taken over a long time and would like to dynamically zoom and pan to analyse the data. Any suggestions?
  2. G

    Max Flow / Min Cut (undirected graph)

    Homework Statement Here is an exercise I came across while studying MaxFlow / MinCut and I'm rather stumped: Designate G = (V, E) as an undirected graph that has at least two vertices. Every edge e on this graph has capacity ce. Pick two arbitrary vertices from G and label them s and t...
  3. Marleycake

    Position-time graph/velocity graph help

    Homework Statement Hi, I just started my kinetics course a few days ago and have a few questions about how to graph this and maybe help me out with some of the equations involved, I'm completely new to this and I got this test sheet a few days ago. thanks a lot guys...
  4. P

    Finding total distance on a position vs time graph

    I feel terrible for even having to ask this. I'm doing A2 at the moment, and we've gone through these sorts of lessons ever since my early AS days. I'm trying to review my notes cos exams are coming soon and I did some questions, and I'm apparently doing them wrong with what the answers are...
  5. Alanay

    How do I graph -66/-99 from -12/11 x 10 + 54/11?

    Okay, so I'm down to the last equation. -12/11 x 10 + 54/11 I get -66/-99. Is this right? If so how do I put it into the graph. -12/11 x 10 = -120/110 + 54/11 = -66/99 (I think I've went wrong somewhere)
  6. N

    I How to understand Plutonium enrichment in the graph

    http://ncsp.llnl.gov/ARH-600/files/pdfs/III.A.4-2.pdf For a certain fixed density (let's say 1g/cm3) different enrichment corresponds with different cylinder diameter 20% wt 12.0in 15% wt 11.2in 10% wt 10.4in 5% wt 9.6in 0% wt 8.4in Why the decrease of enrichment result in a smaller...
  7. R

    MHB Is the Inflection Point at x = 7 Incorrect?

    Hello again :) I am doing a question in which I have to find the mistake that is in one of these points and must change one of these criteria to make it correct. So first I am drawing a graph to get an outline of what it looks like. -f(x) is defined on (−∞, ∞) and differentiable twice through...
  8. L

    How to graph Fc=mv^2/r so that the gradient = velocity

    Homework Statement Fc = mv^2/r represents the motion of a simple pendulum. Describe how this data could be graphed so that the gradient of a straight line could be used to determine the velocity of the object. Homework Equations Fc = mv^2/r The Attempt at a Solution I'm kinda stumped. I tried...
  9. TheMathNoob

    Proving Graph Theory with Group Permutations | G = Sn and S Set

    Homework Statement The problem is attached. I don't get this part. Let G = Sn be the group of all permutations of S. S is a set, so how can we permute something in a set?. Neither I know if the 4 power in the S is a typo. Homework EquationsThe Attempt at a Solution
  10. R

    MHB Sketch Graph: Domain 0<x<12 | f' Increasing, f''<0

    Hi! I'm struggling with this question. I'm supposed to draw a graph that follows and has these features: - Domain of f is0<x<12 - f′ is increasing on (−∞,3) - f′′ <0 on (3,6) - f′ is Concave Up on (6, 9) - f has infelction point at x=9! I don't know if I can get help because this is a drawing...
  11. D

    Calculating Final Velocity Using Force-Displacement Graph

    Homework Statement If the following Force v. Displacement graph is for a 9.9kg object and it's initial velocity is 28.6 m/s the what is its velocity at 30 m? Homework Equations I am not certain that i am even using the right equations with this but: W = fd KE = 1/2mv(final)^2 -...
  12. T

    How to graph the duffing frequency response

    I`ve been able to use excel to plot the trajectory of a harmonically driven duffing oscillator for arbitrary parameters using Runge-Kutta method. I would like to do the same thing for the frequency response, but I simply can not figure out how. I am not very mathematically advanced so the first...
  13. Marcin H

    Solving for Vo: Graph Analysis of Vs vs t

    Homework Statement Homework Equations Vs=Vi(1-e^-t/T) The Attempt at a Solution I am stuck on B. I am not sure how I am supposed to graph Vo with so little information. Do i just use V=Vo(1-e^-t/T) and find the output voltage for each time increment that is on the original graph. So...
  14. wololo

    Efficiently Finding Cycles in a Graph: A Scientific Exploration

    Homework Statement Homework Equations Recursion, graphs, DFS The Attempt at a Solution To try to solve this algorithm, I first need to find all the basic cycles in the Graph G. When I have these cycles, I can simply pick the smallest edge in each of them and add them to the set F, while...
  15. R

    Graph of Elevator's Velocity: Understanding Displacement and Distance Traveled

    Homework Statement Homework EquationsThe Attempt at a Solution This is more of a help with understanding problem. I understand a) and b), but for c), I don't understand: 1. Why is the distance from t=12-16 -20 m and not +20 m? Isn't there a positive slope? I thought this question was asking...
  16. chaiein

    How to create a pose graph from the image descriptor?

    what are the different kinds of input can be given to make a pose graph?
  17. M

    MHB Graph Function: What Does It Mean?

    What does the function even mean?
  18. C

    Displacement from an Acceleration Time Graph

    Homework Statement Homework Equations Kinematic equations t = 18s when the velocity is back to 54km/h or 15m/s at t = 2, V = 13.3 m/s at t = 4.5, velocity is 1.5 m/s at t = 1, V = 15m/s The Attempt at a Solution I have solved the first part and I have the time at which it is 54km/h again, but...
  19. TheExibo

    How to make sense of this velocity-time graph question?

    Homework Statement http://m.imgur.com/tAbHL6S[/B]Homework Equations Velocity=displacement/time The Attempt at a Solution I thought B at first because they start at the same position, so their relative velocities would determine their relative positions, but I guess not since the answer is...
  20. Z

    Acceleration vs Time Bungee Graph

    Homework Statement https://bb9.waukesha.k12.wi.us/bbcswebdav/pid-692070-dt-content-rid-2436419_1/xid-2436419_1 The graph above was made from acelerometers placed on a person while experiencing a bungee jump. The graphed data is not smooth because it is real data. The positive direction is...
  21. A

    Solving Graph of Sinusoid Homework Problem

    Okay I feel really stupid for getting wrong omega for such a trivial problem. 1. Homework Statement Find the function of e(t) = A* sin(wt + fi) Homework EquationsThe Attempt at a Solution A = 0.9 V at t = 0 e(t) = -0.35, and therefore: -0.35 = 0.9 * sin (w*0 + fi) / * arcsin arcsin(-7/18)=...
  22. Gbox

    Graph displacement as function of time

    Homework Statement let there be ##\beta(t+\tau)^{-2}e^{-3}cos(at^{3})## where ##\beta##, ##\tau## and ##a## are constants Homework Equations ##\beta(t+\tau)^{-2}e^{-3}cos(at^{3})## The Attempt at a Solution I know the graph is going up and down exponential but how can I draw it more...
  23. Titan97

    Intensity-wavelength graph for X-ray

    The cut-off wavelength is the minimum wavelength of the X-ray emitted. But doesn't minimum wavelength correspond to maximum energy? Why is intensity zero at minimum wavelength? Shouldn't it be maximum when wavelength is minimum since ##\lambda=\frac{hc}{E}##
  24. D

    Finding Voltage graph from current graph of capacitor

    Homework Statement I am given the current flowing through a 2 micro-farad capacitor in the form of a graph, and I need to create a voltage graph from this. Homework Equations I = C dv/dt Q = VC The Attempt at a Solution The current graph is basic with a constant 4 mA from 0 to 4 microseconds...
  25. K

    Draw the graph of arctan((x-1)/(x+1))

    I am so far able to find the domain, intercepts, concavity and increase/decrease. But I am stuck at finding the asymptotes for the graph. I think there is no vertical asymptote or is there one at x=-1? I think the horizontal asymptote is y=pi/4
  26. U

    Graph Theory: Finding the number of vertices

    Homework Statement 1. How many vertices will the following graphs have if they contain: (a) 12 edges and all vertices of degree 3. (b) 21 edges, three vertices of degree 4, and the other vertices of degree 3. (c) 24 edges and all vertices of the same degree. Homework Equations "Theorem 1 In...
  27. T

    Help with graph units and interpretation

    Hello, I have been doing research with a certain biological substance and its capacitance and conductivity. The following graphs are from a computer connected to a BDS (broadband dielectric spectrometer): I understand the fundamental units, but Re(C'), Re(C''), Re(σ'), lm(σ'') do not make...
  28. A

    Solving Sieve Process Problems: 50% Done, Graph Help Needed

    I have sieve process problem. I alreday solved 50% like Xcut-off but I do not know how the graph is drawn from the table?
  29. TheMathNoob

    Graph theory (incidence matrix and linear algebra)

    Homework Statement I can't understand this paper. I understand the whole incidence matrix stuff, but I don't quiet get how it relates to the linear algebra. I don't know if this is allowed to do, but I will ask you questions line by line, so basically you will read the paper with me explaining...
  30. TheMathNoob

    Graph theory proof (Unlabeled trees)

    Homework Statement A. Show that n^n−2/n! < T(n) by looking at how the symmetric group Sn acts on labelled trees. Use |Sn| = n! T(n) is the number of unlabeled trees on n vertices Homework EquationsThe Attempt at a Solution I can't find any mathematical relation between labelled trees and...
  31. C

    Find Velocity and Time from an Acceleration vs Time Graph

    Homework Statement The rocket car is subjected to a constant acceleration of Ac = 6 m/s^2 until T1 = 15 s. The brakes are then applied which causes a deceleration at the rate shown until the car stops. Determine the maximum speed of the car and the time T when the car stops. Homework Equations...
  32. C

    Find Velocitiy from an Acceleration vs. Displacement Graph

    Homework Statement The a-s graph for a rocket moving along a straight horizontal track has been experimentally determined. If the rocket starts from rest, determine its speed at the instants s = 20m, 50m, and 70m, respectively. On the graph, S1 = 50m, a1 = 10 m/s^2, S2 = 70m, and a2 = 20 m/s^2...
  33. E

    Electromagnetic induction graph

    Homework Statement A small bar magnet is being slowly inserted with constant velocity inside a solenoid as shown in figure. Which graph best represents the relationship between emf induced with time Homework Equations ε = -dφ/dt φ = B.A The Attempt at a Solution Since the magnet is brought...
  34. TheMathNoob

    Proving a Cycle Exists in Finite Graphs with Degree 2+ Vertices

    Homework Statement Exercise 0.1. Suppose that G is a finite graph all of whose vertices has degree two or greater. Prove that a cycle passes through each vertex. Conclude that G cannot be a tree. Homework EquationsThe Attempt at a Solution If every vertex in a graph G has degree two or...
  35. TheMathNoob

    Proving a Tree is a Minimally Connected Graph in Graph Theory

    Homework Statement Let G be a connected graph. We say that G is minimally connected if the removal of any edge of G (without deleting any vertices) results in a disconnected graph. (a) Show that a connected, minimally connected graph has no cycles. (b) Show that a connected graph with no cycles...
  36. TheMathNoob

    Does Induction Work for Proving Graph Theory Statements?

    Homework Statement Prove that a complete graph with n vertices contains n(n − 1)/2 edges. Homework EquationsThe Attempt at a Solution The solution gives and inductive proof, but I am just wondering if this works as well. If we have a set of n vertices or points and we try to match all...
  37. N

    The how to represent an inequality in a graph question

    if x+y ≥ 2 it contains all the point in the line x+y =2 and the half plane above it. but ,graph if x-y ≥ 2 then if consider a line x-y= 2 the inequality represents the line and the half plane below it . i don't understand why it represents the half line below it why not above ?
  38. C0balt

    How does momentum conservation apply to a system with two interacting objects?

    Could you give me some hints at how to answer Q12 part a please?
  39. marcus

    Graph isomorphism problem-advance in complexity research

    There seems to have been a major step forward in complexity research. somebody wrote a pleasant understandable piece about it in Quanta magazine. https://www.quantamagazine.org/20151214-graph-isomorphism-algorithm/ I gave the title an "intermediate" tag because the graph isomorphism problem is...
  40. nomadreid

    Horizontal tangent to wolfram alpha's heart-shaped graph

    On http://mathworld.wolfram.com/HeartCurve.html, the nicest heart-shaped curve is given by x=16sin3t y = 13 cos t-5 cos(2t) -2 cos (3t) - cos(4t) There are evidently two values of t, one in the first, one in the second quadrant, where you can get a horizontal tangent to this shape. Asking...
  41. N

    A question on plotting functions on a graph

    when i was reading a supplementary notes doc from open course ware fro MIT on single variable calculus there was a description about a graphical representation of a single valued function as " if each line parallel to the y- axis and which passes through a point in the domain intersects the...
  42. N

    A question on plotting functions on a graph

    when i was reading a supplementary notes doc from open course ware fro MIT on single variable calculus there was a description about a graphical representation of a single valued function as " if each line parallel to the y- axis and which passes through a point in the domain intersects the...
  43. jedishrfu

    Landmark Algorithm for Graph Isomorphism

    Quanta Magazine published this article on a potentially new algorithm for graph isomorphism by Prof Laszlo Babai of the University of Chicago: https://www.quantamagazine.org/20151214-graph-isomorphism-algorithm/ There's a reference to the Arxiv preprint here: http://arxiv.org/abs/1512.03547v1
  44. PcumP_Ravenclaw

    Is this graph defined at x = 0?

    Hello everyone, Is the graph ## (2^x - 1) / x ## defined at x = 0? When I plot this graph there is no spike at 0 because 0/0 is undefined? Is the computer unable to show this? I am finding the limit as x approaches 0. From the graph limit exits but does f(0) exist? Sehr Danke.
  45. Sarah00

    Graph Isomorphism Homework: Are 2 Graphs Isomorphic?

    Homework Statement Are the 2 graphs isomorphic? Homework EquationsThe Attempt at a Solution Both have same vertices, edges, set of degrees. But I failed to prove isomorphism by adjacency matrices.
  46. REVIANNA

    Classical mechanics: Force versus time graph

    Homework Statement A particle of mass m=4.0 kg is moving along the x-axis. The particle is being acted upon by a variable single force F⃗ , directed along the x-axis. At t=0 s, the particle is moving at v_0=−3 m/s. What is the first time t>0 when the particle comes to a stop momentarily...
  47. TheMathNoob

    Algorithm to find the minimum spanning tree on a planar graph

    Homework Statement I have the following algorithms: Prime MST with array, Prime MST with priorityq and Kruskal with priorityq. I have to choose the best algorithm to find the minimum spanning tree on a planar graph. A planar graph has the property in which the number of edges is in O(number of...
  48. Bill_Nye_Fan

    Equation of a basic velocity-time graph

    Okay, so say we had the following situation: An object accelerates from rest to 3 m/s in 1 second. It then maintains this velocity for 2 seconds before decelerating to a velocity of -3 m/s over the span of 2s. It maintains this velocity for a further 2 seconds. The object then accelerates back...
  49. J

    What kind of graph should I used to graph Mu?

    I have to calculate Mu for the force of static friction of different shoes of different surfaces, which I was able to do. Then, our teacher said to include graphs in our lab report, however I'm not sure which graph to use. What would the axis' be and what kind of graphs should be used?
  50. kostoglotov

    Graphing Eigenvectors and Sine Curves: Understanding the Relationship

    In my text, it tells me to find the eigenvectors of a 2nd difference matrix and graph the eigenvectors to see how they fall onto sine curves. imgur link: http://i.imgur.com/oxbkTn6.jpg My question is simple but general. What does this even mean? How did they produce this graph from the...
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