Questions regarding the plotting or graphing of functions. Questions about graphs with vertices and edges should use the (graph-theory) tag instead. (STUB)

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1answer
56 views

Finding intervals using local min and max (in interval notation form)

I am having some trouble with the following question: Find the critical points of the function and use the First Derivative Test to determine whether the critical point is a local minimum or maximum ...
4
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5answers
114 views

Graph of the function $x^y = y^x$, and $e$ (Euler's number).

Earlier, I was using the Desmos Graphing Calculator, and I wanted to remind myself of what the graph of the function $x^y = y^x$ looked like. If you have never seen what it looks like before, it is ...
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0answers
40 views

Can trigonometric equations be graphed?

I was solving various trigonometric equations. I was confused that how are they solved easily by using methods that are useful to solve algebraic equations. Do the trigonometric functions in ...
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0answers
21 views

Export 3d plot in Maple

I have drawn a 3d plot of a sphere in maple, but when I try to export this one in an .eps file, only the coordinate system is shown, but not the colourful plot. The export works if I use jpg and ...
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0answers
16 views

How should one depict a sign graph/chart with only 1 critical point and one interval?

For instance, if my critical point is $x = 10$ but the domain of the function is "all $x \geq 10$." Normally you'd evaluate at all intervals like this: <--------|---------> ...
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1answer
38 views

How to draw the graph of $x^6 = y^3$ and $3y = (log x)^2$?

For example, if the equation is $x^4 = y^2$ then I can separate this to get the two equations $y = x^2$ and $y = - x^2$ , hence I can plot the two graphs. But how do I simplify the given equation? I ...
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0answers
9 views

Clarification on a rasterizing curve drawing algorithm

The algorithm in question is described in this paper. The author describes the general approach to plotting a curve (page 10): ...
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2answers
21 views

Can anyone help me understand the graph of ellipse and Line

I have an ellipse with semiaxes a and b Let L denote a line passing through the center of the ellipse and making an angle k with the axis of length 2a. What does that mean "angle k with the axis of ...
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1answer
21 views

how to determine the lowest number in this curve

can someone help me on how to find the lowest value which the function will get ? $y=\frac{1}{2}(e^x-e^{-x})+\frac{1}{2}n(e^x+e^{-x})$ thought of using t as $e^x$..but couldn't get an answer.
1
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0answers
31 views

Negative option value

I have an exercise where I need to replicate the following graph: with my own parameters. To do this I use: $\begin{align*} \text{Call option value} =SN(d_1)-Ee^{-r(T-t)}N(d_2) \end{align*}$ ...
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votes
5answers
205 views

Graphing $x^{3 / 2} + y^{3/2} =1$

My brother asked me what I thought was a fairly straightforward question, graph the function below over the real numbers: $$ x^{3/2} + y^{3/2} = 1.$$ Now of course, we can't have any negative ...
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0answers
23 views

Max Flow Min Cut with a Twist Proof

Let G=(V,E) be an undirected graph with positive integer edge costs. Let the set of paths s-t paths be denoted by P. the set of s-t cuts is denoted by C. Prove by construction that: Find the minimum ...
4
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2answers
195 views

Mystical looking graphs (three-dimensional rotating hearts) [on hold]

Plop the following into Google: $$ 2-\sqrt{1-x^2-(y-|x|)^2}\cos(30(2-x^2-(y-|x|)^2)),\tag{1}\\ \text{$x$ is from $-1$ to $1$, $y$ is from $-1$ to $1.5$, $z$ is from $1$ to $2$} $$ Here is the result ...
0
votes
1answer
20 views

When making a line graph, can you start at 4000 on the y axis and then continue up in 500's?

When making a line graph, can you start at 4000 on the y axis and then continue up in in the increments of 500? E.g., 4000 at the bottom then, goes up to 4500 then 5000 etc.
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0answers
13 views

Axis scale where intervals get further apart

I'm trying to automate a water supply pressure and flow rate graph. Traditionally these graphs use some weird axis scale where the intervals become further apart as the numbers get larger. Sort of ...
0
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1answer
21 views

Plot my own function 'in two variables'

I have matlab function in two variables say $function_{something}(t)$ where $t$ is of size $2 \times k$, this is to allow to evaluate $k$ times in two values. So my output is then a $k \times 1$ ...
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1answer
57 views

How can you plot straight lines in Matlab using only values on x axis and the gradient of each line?

I'm trying to plot characteristics for the Burgers Equations. But I have to plot them only using the inbuilt function plot. It seems like a fairly straight forward problem but I still cant solve it
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2answers
18 views

Build the graph of a function with absolute value.

The function is: And my idea of graphic (i did it using two graphs and deleting some parts) Is it correct?
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1answer
46 views

Math quiz ambiguity [duplicate]

This is a picture of my math quiz in which I got a question wrong. I feel I should not lose points as the question is to ambiguous. I assumed that if one point lied above x-axis then that would ...
0
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1answer
35 views

Graph the function $f(x) = \frac{9}{14}x^\frac{1}{3}(x^2 - 7)$ by finding all critical points and inflection points.

I want to graph the function $f(x) = \frac{9}{14}x^\frac{1}{3}(x^2 - 7)$. To start, I know I need the derivative, $f'(x)$, because I want to find the critical points. I found that $$f'(x) = ...
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0answers
26 views

Plot the characteristics for Burgers equation

I'm trying to plot the characteristics for the following problem. So far I have managed to find all the gradients for the lines from each value of x0. But I'm not sure how to plot it. It seems like ...
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2answers
37 views

Given a collection of consecutive points, can I find a graph equation that goes through all of them?

As said in the title I have a collection consecutive of points on R²(x0, x1, x2, etc.), and I am trying to find one continuous function, that defines a graph that passes through all of them. I've ...
1
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4answers
91 views

How many roots does this exponential equation have?

I have the following course assignment: Calculate the number of roots of the following equation: $ e^x = 6 \cdot \ln(x^2 + 1) $ What I have done so far: $ f(x) = e^x - 6 \cdot \ln(x^2 + 1) $ I will ...
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0answers
96 views

Graphs of interesting integrals of the form: $\int \sin^a(x^a)\cos^a(x^a)$

Here are a few graphs of the form:- $$\int \sin^a(x^a)\cos^a(x^a)dx$$ Where $a$ is an even, positive integer. $a = 2$ $a = 4$ $a = 6$ Now, a few graphs of the form:- $$\int ...
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1answer
15 views

Should the following 2 graphs differ?

So , I had this question that will the following 2 graphs differ from each other, as $\csc x$ and $\sec x$ can become not-defined at values like $x=0$ or $x=90$. $$y=\lvert\cos x\rvert+\lvert\sin ...
0
votes
1answer
56 views

Can this be a periodic function

$$F(x) = \sqrt{\sin x + \cos x}$$ I graphed this function and it seemed to be periodic but my textbook says that it's not. Is any other rule it's breaking...?
1
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1answer
41 views

Name of this type of plot? Does anyone know how to produce it

Does this type of polar plot have a name? Does anyone know how to produce it in octave 3.8.1 which is compatible with matlab? Link to site
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2answers
106 views

Level sets for the function $f$

Describe the graph of the function $$f: \mathbb{R}^2 \to \mathbb{R}, (x, y) \to \max (|x|, |y|)$$ computing some level sets and some intersections. I have done the following: The level curves are ...
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vote
3answers
46 views

Describe the graph of the function: Level Sets, Intersections

Describe the graph of the function $$f: \mathbb{R}^2 \rightarrow \mathbb{R}, (x, y) \rightarrow |y|$$ computing some level sets and some intersections. I have done the following: The level curves ...
0
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1answer
38 views

Level set for the function

Draw or describe the level surface and an intersection of the graph for the function $$f: \mathbb{R}^3 \rightarrow \mathbb{R}, (x, y, z) \rightarrow x^2+y^2$$ I have done the following: The level ...
0
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1answer
24 views

Correct way to describe this geometrical transformation

I am trying to describe to geometrical transformation that maps the graph of y = sinx onto the graph y = 2sinx. I know what the two separate graphs look like, and I could draw them, the only ...
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votes
2answers
225 views

Number of solutions of arithmetic funtion's equation.

Say, an equation is given below \begin{equation} 2\pi(x) - \pi(2x)=\omega(x) \end{equation} where $x$ is a positive integer, $\pi(x)$ is the prime-counting function, and $\omega(x)$ is the number of ...
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0answers
18 views

Graph analysis and phenomenon modeled by the curve $S(t)= 1/(1+e^{-t})$

So the question is: The graph looks like: So where I stand with this question is that I am struggling to find something that it models. Once I find some phenomenon that it looks similar to, I ...
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2answers
31 views

Graphing a plane

For $x\geq 0, y\leq 0, z\geq 0$ I understand how to graph each trace, and that the traces intercept each other on the coordinate axis but I do not understand why the plane is represented by the ...
0
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0answers
28 views

How to turn this into a straight line

Right now, I am trying to turn my graph (which looks like a exponential graph) into a straight line graph, which starts at the origin $(0,0)$. How would I do this? My values are given in the ...
0
votes
1answer
21 views

How do I determine the target coordinates based on an angle?

I know my object is at a set of coordinates for example (150,480), and I need to move it x number of units at a y degree angle. Z What is the formula to calculate this? I slacked in math after ...
0
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1answer
22 views

Rational Functions

Part 1: You are planning a school field trip that costs $120$ dollars to rent the bus. A. How much will it cost per student if $10$ students go? $12$? $15$? B. Write an equation to represent the ...
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0answers
26 views

Parabolic Graphs

How to draw these parabolic curves. $y^2 - 2y -x -1 = 0$ $x^2 - 6x - 2y + 5 = 0$ As its easy to draw parabola whose vertex is at origin. But so much confusion in these graph. Help me out.
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2answers
41 views

Finding the formula for a parabola and its antiderivative graph.

For part a) i have : $f'(x)= 3x^2-18x+15$ Can someone provide a straightforward, simple explanation for part b)? Best if no hints are given just an answer with the explanation please.
2
votes
2answers
77 views

Length of arc paradox

Premise 1: Line is composed of points. Premise 2: Each point is associated with specific co-ordinates (x,y). Premise 3: Lines of equal length have equal number of points. Lines of greater length ...
1
vote
1answer
35 views

Calculating values for cubic Bezier curve

I'm trying to use cubic bezier curves for some non-linear animations in my iOS app. Let's say I'm animating position of some element on the screen. I'm using this curve from cubic-bezier.com for ...
0
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0answers
23 views

graphical flower and rule of thumb from central limit theory question

Does the flower graph have a name? I plotted the shape which is the set A={(x,y/x)} for all whole numbers of x>0 with ...
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0answers
21 views

Moving Logarithmic function equation plotted on log log paper up or down on the y axis

I'm hitting a stump here. I have a logarithmic function plotted on log log paper so it's a straight line. So let's say I have this entire line plotted out on the log log paper....how would I simply ...
0
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1answer
49 views

How to draw the graph of $y=(2x^2+13x+9)/(6x+3)$

We haven't learnt how to design the graphic when the denominator has x, and it cannot be simplified. Can you just tell me the steps or lead me to a web address?
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2answers
52 views

Does there exists values of x for $f(x) = x^{2} e^{\frac{1}{(1-x^2)}}$ when $f(x)=1$ in $(-1,1)$

Given $ \; \large{f(x)=x^{2} e^{\frac{1}{(1-x^2)}}} \; \; $ has solutions for $ f(x)=1 $ in $(-1,1)$. I think there are no solutions, but I am not sure how to prove it. Can anyone please help? Thanks ...
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3answers
49 views

How do I come up with a continuous function between two functions?

Say $y = 0$ when $x \leq 0$, and $y = 1$ when $x \geq 1$. I want to create a function between these two that still makes everything continuous (continuous at $x = 0$ and $x = 1$) and is monotonically ...
0
votes
1answer
27 views

Find longer side of a rectangle with respect to another rectangle

So I have two rectangles: Rectangle R1 with width r1w and height r1h Rectangle R2 with width r2w and height r2h I can find the slope/aspect ratio of the two ...
1
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4answers
148 views

Help finding turning points to plot quartic and cubic functions

My teacher assigned us some graphing homework. I know how to graph all of them manually all except these two $f_1(x)=x^4-x^3-4x^2$ $f_2(x)=\frac{1}{2}x^3+2x^2-8x-2$ When i asked him how he said it ...
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0answers
17 views

How to plot curve instead of lines in the below figure?I am using Log scale in x axis.

How to plot curve instead of lines in the below figure?I am using Log scale in x axis.
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0answers
12 views

How to calculate an angled increment on a graph

I'm trying to figure out how to calculate the values needed to make an angle. Like if I have a object at {1,1} and it needs to travel at a 45° to get to {5,5} I would have it increment up the spaces ...