Graph Definition and 999 Threads

Homework Statement This is a question refer to a transistor in a common emitter configuration. And this is the table with data of Vce and Ic at certain range of Ib stored in microsoft excel, and the graph is plotted within the file attached(in another tab)...

I'm asking this question here on a physics forum because a physics question sparked this off. However, it is applicable to all aspects of scientific knowledge. I am looking for a scientific knowledge dependency graph. This is one centralised database which captures the specific and required...

Homework Statement From the waveform shown below, estimate a) the damping ratio ζ (you may compare response with a standard chart); b) the forced or damped frequency of oscillation; and c) the natural or undamped frequency of oscillation. Homework Equations Since the waveform is under...

I have these problems I need help with. Can anyone take a look at them? https://www.dropbox.com/s/vq8rk6z5ea5gpwd/Problems.docx

Having a hard time with this problem. Can anyone guide me in the correct direction? Random graphs are a fascinating subject of applied and theoretical research. These can be generated with a fixed vertex set V and edges added to the edge set E based on some probability model, such as a coin...

In a series of experiments, block B is to be placed in a thermally insulated container with block A, which has the same mass as blockB. In each experiment, block B is initially at a certain temperature TB, but temperature TA of block A is changed from experiment to experiment. Let Tf represent...

Hello, Just wondering if any of you have encountered a term for a particular type of graph. It is like a graph that allows for loops, but for loops, instead of joining a vertex to itself, it joins a vertex to nothing. I just want to be consistent with existing terminology, if there are none...

Here is the question: I have posted a link there to this topic so the OP can see my work.

i was wondering what the equation of the line/curve on a velocity vs displacement graph would be which would indicate constant acceleration. I am totally stumped. EDIT:please feel free to shift the thread to any other place if need be, but since it wasn't coursework this seemed to be the natural...

I am trying learn how to graph Normal distribution with TI-Nspire CX CAS went to the Ti.com but just found a work sheet. or else I missed it some where. but saw some examples on the display. thanks ahead for help:cool:

I know this proof is probably super easy but I'm really stuck. I don't want someone to solve it for me, I just want a hint. One way is trivial: suppose f continuous. [0,1] compact and the continuous image of a compact space is compact so f([0,1]) is compact Now the other...

So I'm trying to understand this paper (found here: http://arxiv.org/abs/1301.3411) but my math skills are very limited. These include: -Groups (the very basics, like the first of Charles Pinter's book) -Analysis (the very basics) But what all books/papers/topics would you suggest I...

Homework Statement A simple type of blinking light circuit can be constructed using a neon lamp. The circuit has a 4.0uF capacitor in parallel with a neon lamp. When the voltage is low in the RC portion of the circuit, the lamp does not conduct electricity. Therefore, it is effectively not...

Hi All As the title suggests I want to get to a level where I can approach research problems in Graph Theory. Specifically in the areas of Algebraic Graph Theory and Random Graphs. I know this is no small endeavour but I atleast want to put some direction into my extra studying. My...

I am a high school physics teacher and I've been trying out an experiment for my students. I used a manometer (a plastic tube in a U-shape partially filled with water) to measure the pressure of the air in a boiling tube. I placed the boiling tube into a beaker of water and varied the...

Homework Statement Show that there exists a group of order 21 having two generators s and t for which s^3 = I and sts^{-1} = t^2. Do this exercise by constructing the graph of the group.Homework Equations Based on the given relations, we have t^7 = I.The Attempt at a Solution Since ##s## and...

I was just curious as a possible confusion that might occur when graphing a v vs t Graph. Because velocity is a function of time, but time is also dependant on velocity, so how would we denote this on a graph? Hope i got my point across, thanks!

Homework Statement A -1.0 nC charge and a 1.0 nC charge are separated by 10.0 cm. a) At what position(s) is the electric field due to the two charges zero? b) At what position(s) is the electric potential due to the two charges zero? c) Draw a graph showing the zero electric field and zero...

Homework Statement The graph is as folllows-(SEE ATTACHMENT) Q.draw acceleration vs disp. graph. Homework Equations Basic equations of motion, basic calculus The Attempt at a Solution I have tried to write a linear equation in v and s and then differentiating it w.r.t. to time. but I am not...

Okay, so I just started reading a few books on Graph Theory and Topology (I wasn't sure if I should put this in Topology or here.), and I am just here to clear up some concepts, mainly about Cliques, to be precise what is a Clique? I have read Wikipedia articles and the books, and still No clear...

Homework Statement EXPONENTIAL FUNCTION The graph represents a transformation of the function f(x) = 2^x, Write an equation for it. The graph in question is the second one, graph B. http://ars.els-cdn.com/content/image/1-s2.0-S0006349598778683-gr1.gif Since there are more variables...

Homework Statement The problem is telling to write the interval of time in which a car has the highest speed. We see in a graph (time-speed) negative and positive values. Homework Equations Definition of speed. Logic. The Attempt at a Solution So, I wonder whether they are...

Hi everyone, I'm learning calculus at school. Recently I was taught this equation like. Y = (2X^2)/(9 - X^2) So the teacher did all by himself. So I came home and now confused. I know there are 3 graphs(sorry if the word is not right ) so I was doing it again. And I'm stuck at where to get the...

Hello, I wanted to take some time and show how to sketch the graph of a function! If you see anything that is wrong, please PM me and I will correct it!:) I hope you enjoy, understand and learn!:) 1. An exponential function Draw the graph of y=e^{-2x^3+3x^2+1} Okay, the first thing I...

I have a kind of embarrassing problem. When I'm working on problems, especially if there's more than one in a row where it involves a bunch of coordinates I inevitably flip graphing them, instead of going for the x first ill go for the y. Is there a simple way of remembering to do it so I can...

Homework Statement 2x>3sinx-xcosx, 0<x<∏/2 Homework Equations The Attempt at a Solution One possible way is to draw the graph of the functions and compare but plotting a graph manually is not easy in this case. I want some other methods.

In a group of n people, each pair are friends or strangers. No set of three people are mutually friends. For any partition of the n people into two groups, there exists two people in a group that are friends. Prove that there exists a person who is friends with at most 2n/5 people in the group...

Please check if my two following proofs are correct. I didn't know whether it was better to post them in a separate thread or not. I posted them together since they are both questions related to graph theory. Let me know if I should have separated them. Prove that a graph G is a tree iff it has...

Prove that a graph on v vertices that has no cycle is connected iff it has precisely v-1 edges. Necessary Condition: A connected graph with no cycles is a tree. Therefore, it has v-1 edges. Sufficient Condition: I need help with this. How can I use "a connected graph has no cycles iff it has...

Here is the graph in question: The edges in red are the paths that must be included in the cycle, since vertices a, k, e, and o have only degree 2. I listed all possible routes starting from vertex b, and showed that they all routes closes a cycle while leaving some vertex disconnected. Is...

[SOLVED]Graph theory proof The graph G has precisely two vertices x and y of odd degree. A new graph of multigraph H is formed from G by adding an edge xy. If H is connected, prove that G is connected. Please check my following proof for this problem. Since G has exactly two odd vertices...

need help with this question, is the gradient negative or positive since the voltmeter is over the battery? Here is the image (sorry for making you tilt your heads) https://www.dropbox.com/sh/v6ydqbfrg20whtb/ZWR-r9ZOSH?lst#f:q17.JPG

Hi guys, so I've never used MATLAB before, and i need to make a plot that changes constantly. Let's say that i have Sin(x) from 0 to 3pi Then i need it to change to a Cos(x) from 0 to 3pi then to a Tan(x). I could do it in other languaje like Php or c, but in MATLAB i have no idea. I...

Homework Statement Well I think the answer is d because if the acceleration is constant then the distance should increase at a steady rate hence the straight line for d. But my teacher says different his working is shown on the side of the question. He believes the answer is A...

I have fairly simple non linear graphs that I need equations for. Sometime back I used a program that gave me a power series equation when multiple cordinates of the graph were entered. I no longer have that program and don't remember where I got it. How Can I get these equations? There must...

Homework Statement See code below: The Attempt at a Solution I am simply trying to get the code to work: When I try to compile, the terminal says that apparently the package ptolemy.plot.* package does not exist and so does not recognise statements like PlotFrame etc.. Why is this...

Quick question guys.. I understand how trig graphs work (cos, sin, tan etc.). What I don't understand is when there is a horizontal translation of say, pi/4, I notice that the graph moves, but I don't really understand how to know exactly how far to move. For example if your HT was pi/4 and...

Someone showed me a graph that has to do with how a cylinder oscillates in uniform flow, starting from no oscillation, to high oscillation, back to none. I know the y-axis is amplitude/diameter and the x-axis is velocity / (natural frequency X diameter) I would just like to find out more...

Homework Statement Find the points on the graph of y = x3ex where the tangent line is horizontal. (Your answer should include x-values and y-values) Homework Equations Product rule fg'+gf' The Attempt at a Solution (x3)(ex)+(ex)(3x2) x3ex+3x2ex= y' x3ex+3x2ex= 0...

So I have a function which represents motion. This function is x^2 which is also the area of a square. Now, what I know from the calculus is that the derivative is 2x, no arguing there but the derivative of a squares area is the perimeter, which is 4x? 4x and 2x are not the same at all! Another...

Homework Statement Find a polar equation with the graph as xy=16 Homework Equations r = ed/(1+- cos\theta)? I'm not really sure at all. The Attempt at a Solution I also tried using x = rcos\theta and y = r sin\theta but I can't get anything. I know it's a hyperbola.

Homework Statement A particle starts from rest and accelerates as shown in the attached figure. Determine (a) the article's speed at t=10s and t=20s. (b) The distance traveled in the first 20s. Homework Equations a=dv/dt The Attempt at a Solution (a) t=10s, speed = 20m/s t=20s...

In the graph of volume against 1/pressure,why does the straight line graph not touch the starting point. Whereas,in the graph of pressure against 1/volume,why does the straight line graph touch the starting point?? Thanks. Pls helppp!:)

Homework Statement I know this is the description of a bipartite graph: A bipartite graph G is a simple graph whose vertex set can be partitioned into two mutually disjoint nonempty subsets V1 and V2 such that vertices in V1 may be connected to vertices in V2, but no vertices in V1 are...

Working on a physics lab report regarding uniform circular motion, one of the questions asks to graph the Tension Force vs. the square of the speed. Another part of the same question asks what the slope of the graph represents, which is where I'm stuck.

Homework Statement The figure below shows the acceleration-versus-time graph for a motorcyclist riding along the x-axis. Assume that at t = 0, x = -1 m and v = 2 m/s. Unless otherwise specified, use the graphical analysis to solve all the questions below. Do not use the kinematic equations...

I'm working on simple game and am working on a leveling system, using a function to get experience needed. I am using area under a function above y=0. The first problem, I can't figure out a simple number. f(x) = x2/5 dx Then, looking for area, I'm unsure about a really simple thing. Getting...

Homework Statement How do you find wavelength given this wave graph? [ignore my title please]Homework Equations c= (wavelength)(frequency)The Attempt at a Solution I always see displacement (y) vs distance (x) graph, but this one is displacement (x) vs t I'm kinda confused how you solve...

Bar Pendulum Graph name? Hi! WWhen i did the Bar graph experiment, i obtained a parabolic curve on negative and positive x axes (time period^2 vs distance from cg graph). Can anyone tell me what it's actually called, the actual name of the graph?