Graphs Definition and 625 Threads

  1. T

    Is there another name for the volume Swept through in maths Graphs ?

    Is there another name for "the volume Swept through" in maths "Graphs" ? Is there another name for "the volume Swept through" in maths "Graphs" ? No matter how and where I search I can't find anything showing me how to get the "the volume swept through" of a graph and yet they ask it just...
  2. G

    Graph Theory - Connectivity of r-regular graphs

    Hello everyone. All help appreciated.
  3. S

    Diameter of Graphs: Why 2 & Exceptions

    Explain why the diameter of almost every complement of a tree will be 2 and find all exceptions to this rule
  4. S

    Edge Colouring of Bipartite Graphs: Proving Valency Equality

    Prove by induction on the number of edges in a graph that any bipartite graph has edge colouring number equal to its maximum valency. Also, Find such an edge colouring for a bipartite 4-regular cartesian or tensor product of your choice of 2-regular graphs
  5. F

    MHB How Does Unique Edge Weighting Guarantee a Singular Minimum Spanning Tree?

    Prove that if a weighted graph has unique weights on each edge that there is only 1 minimum spanning tree. Do I need to use an algorithm such as Prim's to show this or do I use properties of weighted graphs?
  6. S

    Help with logarithms and graphs

    1. Determine the equation y=f(x) for each of the following cases in simplest form. All of the plots are straight lines and all coordinates are indicated with abscissa first, ordinate second (x,y). -log y versus log x on a rectilinear graph passes through (5,7) and (2,3) -(y-2)^2 versus x...
  7. Femme_physics

    How to Draw Logic Gate Graphs for NOR and XOR Gates

    Homework Statement Graphs A and B are entries to a NOR gate with 2 inputs. Draw the output C. Graphs X and are entries to a XOR gate. Draw the output Z. Homework Equations The Attempt at a Solution
  8. V

    Snapshot and history graphs for a string under tension (drive mechanism)

    Homework Statement A string with mass density u = 9.00 g/m extends from zero to infinity along the x-axis. It is under tension T = 25 N, and is driven by a mechanism at x = 0. The velocity of the drive mechanism depends on time as: vy(t) = 0 (if t = 0) 10.0 cm/s (if 0 < t ≤ 0.1 s)...
  9. E

    How Do You Determine Supremum and Infimum Without Graphing?

    In class, we have been introduced to the supremum and infimum concepts and shown them on graphs, but I am wondering how to go about deriving them, and determining if they are part of the set, without actually having to graph them- especially for more complicated sets.
  10. G

    Why do tensile testing graphs show a negative slope at these regions?

    Do tensile testing machines reduce the value of load in these regions? If yes, why? If no, what's happening in the graph?
  11. K

    Velocity-Vs Time Graphs - 2nd problem

    Velocity-Vs Time Graphs -- 2nd problem How would i sketch a velocity vs time graph for the following scenario: A ball is thrown up out of a person's hand, it rises and then returns to the person's hand. I just don't know how to illustrate this on a velocity vs time graph Thanks
  12. K

    Sketching Kinematic Graphs for a Person's Movement from a Reference Point

    A person starts 50m [N] of a reference point then walks until hs is 50m [S] of the reference point. The person then jogs until he is 50m [N] of the ref. point. The person then runs until he is at the ref. point. How do i sketch a velocity vs time graph and an acceleration vs time graph for...
  13. T

    Solve Forces & Graphs Physics Problem | RCXD Acceleration

    So the problem is that i have a physics test coming up and its about forces and graphs. The teacher can not explain the different formulas clearly which results in everyone getting bad grades. I wonder if anyone can explain this to me.Homework Equations A RCXD (a little car with explosives...
  14. J

    MHB Recognisable colourings of graphs

    Do these go by any other name? I'm really struggling to find information on them. So far I've found a paper on it by Chartrand & Lesniak. (Dull)
  15. K

    Maple MAPLE: Superimpose graphs of 10 discontinuous functions

    Hi, I'm working on an assignment which requires me to superimpose the graphs of 10 different discontinuous functions on the same graph. Can someone please explain step-by-step how to do so in MAPLE? By the way, I have absolutely no experience in any computer programming in any form and I've...
  16. J

    Inverse Trig Graphs: Domain and Range

    Hey everyone. Sorry to post another topic, but i thought this would be easy to find on google, to help me with , but i can't find it. All I am really lookin for is someone to let me know if my answers are right, and if not, then how i can fix them :) Anyways, i was asked to graph...
  17. O

    Fun with graphs and calculators

    I was coming up with examples for my students as to why we demand they actually understand math in calculus class instead of plugging all their functions into their graphing calculators to draw graphs and calculate integrals. I basically hit the motherload... I have confirmed this works on...
  18. S

    Kinematics:Interpreting graphs and deriving equations(Check my solutions please)

    Homework Statement Marian who is standing on her balcony is surprised by a pigeon, and throws a flowerpot up, in the air at 2.1 m/s. It takes a total of 3 s for the flowerpot to smash to the ground. The flowerpot experiences acceleration due to gravity of 9.8m/s a) How high is Marians...
  19. J

    Finding the Range of Graphs: f(x) = ex2 and g(x) = x2 + 3ex2

    Homework Statement f(x) = ex2 find the range of f(x) How do I do this - I don't know how to draw this graph?g(x) = x2 + 3ex2 Again, how is this done without drawing the graph?Homework Equations The Attempt at a Solution so for the first graph, for example, I differentiated it dy/dx for f(x) =...
  20. L

    How Do You Graph 3D Functions in Mathematica 8?

    (note for editor; this is not a homework problem, this is bred out of my desire to visualize 3space) Hello fellows, I am hoping that somebody can help me. I've asked multiple teachers and tutors, but nobody can solve my seemingly very easy problem. I am taking a course in multivariable...
  21. T

    Automorphism of these Cayley graphs

    Hi everyone, I need a lot help on how to find automorphisms on these particular Cayley graphs. I have three groups here: <a,b,c,d | [ab,cd]=1>; <a,b,c,d | abcda^(-1)b^(-1)c^(-1)d^(-1)=1>; <a,b,c,d | [a,b][c,d]=1>. I finally got three Cayley graphs down, first one is like Z^2, but with...
  22. H

    What causes the anomalies in these graphs and how can they be avoided?

    Holy...I have to retype my entire post *sigh* lovely. Ok, let's try a shorter version. I've had a question that my engineering cousin was unable to help me with (perhaps too busy). I'm a programmer first, and barely remember Calculus I so we're both on the same page. Let's start with y=x...
  23. M

    Complex / imaginary numbers trigonometric graphs

    Hi, I have been representing complex numbers in graphical form in school recently. My teacher was telling me about a graph which shows all 4 quadrants and basically shows you what each quadrant is in terms of pi. Hopefully you understand what I mean, I have been looking on the internet for this...
  24. S

    Position-time graphs and tangent lines

    The Following data table provides information about a crate of radishes that is sliding down the ramp of a delivery truck time position 0 ------ 0 2------ 0.6 4-------2.4 6------- 5.4 8------- 9.6 10------ 15Next it asks you to draw a position time graph, which i did, and its identical...
  25. J

    What order do you transform graphs in?

    Homework Statement In my A2 maths class, we were doing revision on transformations of graphs, as in: Homework Equations with a graph f(x) af(x) is a stretch scale factor a in the y-direction f(bx) is a stretch scale factor 1/b in the x-direction f(x)+c is a translation of c in the y-...
  26. P

    Comp Sci Graphs in Fortran: Making tcentre(i) vs. t(i)

    hello..here is a program.. and i need to make a graph of tcentre(i) against t(i)..how to do this... these variables are bold in the below code !here are the declaration of variables DIMENSION...
  27. R

    Drawing Modulus Graphs: Step-By-Step Guide with Examples

    Homework Statement how would I draw the graph f(x) = ln|3x-6| Homework Equations NONE The Attempt at a Solution So I know that the graph ln(3x-6) would be a transformation of ln(x) 6 units to the right and the stretch by scale factor (1/3) along the x-axis (i.e: divide all x...
  28. pairofstrings

    MATLAB Plotting Graphs with Matlab: Solutions to Issue 1,2 & 3

    Hello everyone, thanks for reading my post. Issue 1: Example: Suppose I want to draw a graph for sec θ=x + 1/4x I want 'θ' on the y-axis and different values of 'x' on x-axis. Can I plot the graph using Matlab? Issue 2: I want to know if it's possible to plot graph of complex mathematical...
  29. A

    What Are the Best Free Alternatives to MATLAB for Simulating Equations?

    ¿Software to simulate graphs? Is there an alternative to MATLAB for simulating equations, I am looking for a way of getting some intuition for some Convection Diffusion Equation. I would like to play around with it, simulate it, change its IC/BCs, having some interactive graphs and stuff.
  30. C

    Find Software to Automate Recognition of 2D Graphs

    Does anyone know if there is a software program that I can find/buy somewhere that can recognize an image of a curve and generate a 2D Cartesian equation for it? In my line of work I am constantly referencing these regular 2d graphs (power vs resistance graphs for thermoelectric modules)...
  31. L

    Straight Line Graphs -Plotting, Gradient, Intercept & Finding Equation

    Homework Statement I have an issue with Straight Line graphs, I have never done them before (I touched on them in Seconday School, y=mx+c that sort of stuff) Now I've been faced with a problem that I need to learn. It's not homework it's revision but I thought it was more relevant to post here...
  32. N

    How Graphs are affect by higher order derivatives

    How does higher order derivatives affect the graph? Mostly just the 3rd, 4th or 5th derivatives. I believe I have found the 3rd one but I'm not sure about it or the others.
  33. J

    Calculating the Weighted Average of Two Graphs

    i have an excel file containing 2 graphs [R & V], and their x & y coordinates in 4 separate lists [the X coordinates of R, the X coordinates of V, the Y coordinates of R, the Y coordinates of V] i need to calculate the X & Y coordinates of a 3rd graph through a weighted formula that takes 55%...
  34. A

    Very Basic Maths Assignment (sorry i'm a newbie) based on profit and graphs

    Homework Statement Firstly I'm sorry to bother all of you that will find this question really basic but I haven't studied Maths since GCSE 7 years ago and I am now doing a degree in Engineering without A Level Maths so any help would be great...I need to work out the algebra and the main...
  35. J

    Almost All Graphs are Non-Planar

    Homework Statement Prove that almost all graphs are not planar graphs. Homework Equations Kuratowski's Theorem The Attempt at a Solution Kuratowski's Theorem states that a graph is planar if and only if it does not contain a subgraph homeomorphic to K5 or K3,3. Therefore, if I...
  36. B

    What Should the Expected Slope of T^2 vs. L and T^2 vs. M' Graphs Be?

    Homework Statement What is the expected slope of the line? What was the actual slope of the line of best fit? Calculate the gravity constant g from the slope of your graph Homework Equations k = (Mg) / (y_0 - y) 4pi^2/g x L = T^2 The Attempt at a Solution I understand how to...
  37. F

    Guidlenes for tansforming graphs

    This is a little more open ended then most HW questions. I'm helping a friend with some HW and we need to transform a parabola. Ultimately we have to find the tangent line, vertex, ect but I'm failing to recall the rules on how to manipulate the parabola to be in the domain of the graph we need...
  38. S

    Input and Output graphs with capacitor

    Homework Statement Hello all, there has been some debate in my class as to the output waveform for the following circuit: Others say that the output will always be zero.
  39. N

    LaTeX Cayley Graphs in LaTeX: Tips and Tricks for Creating Dynamic Visualizations

    Hello, What is best suited for making cayley graphs in LaTeX? Thank you.
  40. F

    MATLAB Merging Two Graphs into One in Matlab

    Hello Well since I'm a beginner in Matlab i have a question aboute ploting the graph. How can I merge two graphs into one ? Since i have function test(x,h) and function test2(x,h) both of them plotts in a two separate graphs. How do i do if i want to see both of them in a single graph ...
  41. S

    Sketch the graphs of solutions of diff. eqs

    Hi people! This is my first topic here so excuse me if I am doing smth wrong) So basically I am having problems with understanding of how to sketch the graphs of solutions of diff. eqs in terms of y and t... Here is the description and 2 problems: Problems 8 through 13 involve equations...
  42. R

    Finding Speed, Velocity, Displacement, etc. from velocity-time graphs?

    Lets say I had these two graphs: How would I find distance traveled, displacement, speed and velocity from these graphs? I would appreciate it if you could show your work. Thanks in advance.
  43. R

    Difference between Average Speed & Average Velocity in Velocity-Time graphs?

    I just want to know what is the difference on how to find Average velocity and Average speed when I try to find it in Velocity-Time graphs Also how do you find distance traveled and displacement in these velocity-time graphs. Thanks in advance for your help. Please use fairly simple...
  44. A

    MATLAB Plotting Multiple Graphs in MATLAB

    Dear Fellows, I need to plot a graph in matlab, and stuck in obtaining multi plot from it for different constant values... following example will explain my situation. x=1; y=3; c=x^2+4y+9z z=linspace(0,1.2); plot(z,c,'r') in this I want to plot for y=3,y=4,y=5 and y=0 all curves in...
  45. B

    What Do Vertical Lines in Signal Graphs Represent?

    So I am 2nd year now and we started this new course Theory of Signals. Already I bumped into a wall when it came to understand basic stuff. Here is what I mean [PLAIN]http://pokit.org/get/0864633c869b647116b980428a07d4f1.jpg Here we have 4 functions, each representing one type of...
  46. O

    How to Find the Area Between Two Graphs: A Trigonometric Approach

    Homework Statement Find the area of the region enclosed between y=4sin(x) and y=2cos(x) from x=0 to x=0.8pi. Homework Equations \int^{0.8\pi}_0 dx g(x) = 4\sin(x) f(x) = 2\cos(x) The Attempt at a Solution This problem needs to be split up into two parts...
  47. A

    Where Did Bill Go Wrong? Tips for Correctly Drawing Velocity vs. Time Graphs

    i am trying to do my physics lab tutorial homework and i am confused about a question that asks.. bill got his distance and acceleration graph right but drew the incorrect velocity vs. time graph shown here. velocity | | / | |\ | / | | \ |_ /__|______...
  48. M

    Are my graphs and answers correct for position, velocity, and acceleration?

    I posted a picture that translates the bottom information into a graph I wanted to know if my answers below are correct and my graphs are correct... Thank you. First Graph:Position second Graph : Velocity third graph: Accelertaion Position...
  49. N

    How do you draw v-t, a-t and d-t graphs

    I was wondering if someone can explain to me in detail on how to accurately draw a velocity-time graph and an a-t graph when the d-t graph is given.
  50. M

    Determining the function using graphs

    Homework Statement Shown in picture Attachment Question #2. Homework Equations Not sure..That's what I'm supposed to figure out. The Attempt at a Solution Well I've graphed the points..That's about it hah. Seems like a Log graph flipped on the x-axis.
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