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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0answers
6 views

Recreate image as relation

How would you go about creating a relation which when plotted, looks like this? It doesn't have to be as ugly as this drawing.
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2answers
18 views

Region given by these inequalities in XY Plane

Given region as $ 0\leq x \leq y $ , $ x+y \leq 1$ . I did this as Is this correct ?
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1answer
31 views

Find cubic Bézier control points given four points

What I need is to generate an SVG file while having a series of (x,y) ready. P0(x0,y0) P1(x1,y1) P2(x2,y2) P3(x3,y3) P4(x4,y4) P5(x5,y5) ... I need to make a ...
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3answers
89 views

Equation of a tangent to the graph of a function parallel to a line [on hold]

Please help me find the answer to this question. Thanks. What is the equation of a tangent to the graph of a function $y=x-\frac{1}{x^2}$ which is parallel to the line $y=3x$?
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3answers
55 views

Why don't graphing tools represent holes in a graph?

Why don't graphing tools represent holes in the graph of a function? A hole at a point in a graph is point where function is not defined. Suppose there is a function $$\frac{x}{\sqrt{x+1}-1}$$ Its ...
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0answers
5 views

How do i find the undefined when doing a Tangent or Cotantgent function graph

My pre calc teacher is forcing us to use her way of doing tan/cot graphs she says for tangent it is Undefined - (-1) - 0 - 1 -Undefined How do i graph these, every tutorial or video or explanation ...
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0answers
9 views

How can I make this tangent function only appear once (or be spaced very widely)?

I only want the function to go from $x=5$ to whenever the function is 4.5 (in other words, when $y=4.5$). Is there any way to do this without specifying the domain? It has to have the shape of the ...
0
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0answers
7 views

CRAN (R) printing numbers in plot labels and latex in labels [on hold]

Question 1. I want to do something like plot(x,y,main=c("Parameter=",mu)) where mu is some 1-ary variable. This does not work. What is a correct way to achieve this? Question 2. I want to do ...
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1answer
44 views

How to plot $y=\frac{1}{(x-4)^{1/3}}$ with mathematical softwares?

I tried to plot the function $y=\frac{1}{(x-4)^{2/3}}$ with Maple software. The result was: It is easily can seen tht the graph is not correct. But if i try to plot the function ...
6
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3answers
130 views

How to visualize $f(x) = (-2)^x$

Background I teach Algebra and second year Algebra to middle school students. We are currently studying Exponential, Power, and Logarithmic functions. We study exponential functions (of the form ...
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1answer
26 views

Reachability relation set

How can i define reachable relation set of R for a given di-graph below?
1
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1answer
17 views

Given the graphs of $y=f(x)$ and $y=g(x)$, sketch the graph of $y=k(x)$

I think I have solved this problem correctly, but I am a little unsure of whether or not the asymptotes I found are correct. My apologies for the picture, I realize it is a little small for clear ...
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0answers
23 views

Sketch the graph of $y=(g-f)(x)$ given the graphs of $g(x)$ and $f(x)$

Sketch the graph of the combined function of $y=(g-f)(x)$ for the following functions of $f(x)$ and $g(x)$. I've attempted the problem already (see attached work), but I am unsure of whether I ...
1
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2answers
28 views

Use the graph of f(x) and g(x) to evaluate (f+g)(1)

Use the graphs of f(x) and g(x) to evaluate the following. I've done what I think is all the work for this problem, but I'd like to make sure I'm on the right track with this. Feedback on whether ...
2
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1answer
22 views

Is $\gamma(t) = (|t|,t)$ plot $y = x$?

I have this parametric curve : $\gamma(t) = (|t|,t)$ with $\gamma(t) : \mathbb{R} \to \mathbb{R}^2$ And I have to say if the plot is the line of equation $y = x$. Here's my answer: $x(t) = |t|$ ...
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1answer
45 views

What does $\mathbb{R}^2$ domain mean?

I have a parametric curve defined by : $\gamma\colon\left[ 0,+\infty \right] \to \mathbb{R}^2$ defined: $\gamma(t) = (\ln(t), 3\cdot\ln(6t))$ Now I have to say if the plot of this curve is a line of ...
1
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1answer
21 views

Double solutions and plotting transcendental equations

I have the following transcendental equation: $y^2 - \log(y)^2 = 4\cdot\log(x) + 4/x + C$ and I aim to plot the equation in the positive, real quadrant, with $x>0$ (actually in the $0 < x ...
3
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2answers
30 views

Common formula for two sets of linear data

I've got two sets of data, both of which create a roughly linear line. I developed each set with a value of K, and I collected the data. ...
0
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1answer
33 views

How to define a meshgrid (x,y) between the intersection of two oblique lines.

How can I create a meshgrid to draw a 3d surface in a domain (zone 1) defined by the intersection of two oblique lines in Matlab (see attached figure)1. The variables 0
1
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1answer
27 views

What is the relationship between (x | Z[a]), (y | Z[b]), and (((x^2 + y^2)^(1 / 2)) | Z[a])?

In other words, so to speak, how would I create a formula that would solve $$(\sqrt{(x | Z[a])^2 + (y | Z[b])^2}) | Z[a]$$ for either $x$ or $y$, given the other? In English, what I want is a ...
-1
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1answer
61 views

How to draw a 3-D surface between two straight lines [closed]

How can I draw a 3-D surface between two straight lines in Matlab: X=0:0.05:0.25; y1=2*x+1; y2=5*x-2; z=function(x,y)
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0answers
27 views

Computationally Plotting an Equation

I have the following equation: $y^2 - log(y)^2 = 4log(x) + \frac{4}{x} + c$ and I want to plot this, real terms only, in the eqi-axis interval 0 to 5, for different values of c. Is there a general ...
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3answers
36 views

How to graph $g(x)=4^x-1$ and find its domain and range? [closed]

How to graph $$g(x)=4^x-1$$ and give its domain and range using interval notation? I have no idea what to do.
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2answers
504 views

Why does this graph intercept both axes at the golden ratio?

Earlier, I was playing around with the Desmos Graphing Calculator, and I discovered that the following formula intercepts both the x and y axes at the golden ratio. I know that it makes sense, but I ...
0
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1answer
22 views

What axis should my two variables be on?

I'm producing a report based on the speed of a program i've written however I'm not sure which axis time and the number I enter in the program should go on. My scenario: I've written a program and to ...
0
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3answers
40 views

Symmetry in $x=y$

What are the properties of a function being symmetrical in $x=y$ ? how would one find the image of a function reflected in $x=y$ ? and what would one need to prove to show that two functions are ...
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0answers
9 views

Simulate and present normal distribution [migrated]

My task is to compare different methods of simulating normal distribution. For example, I use following code, to generate 2 vectors, each 1000 values (Box-Muller method): ...
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0answers
44 views

What's the standard form of the equation of a line of a slanted parabola?

I have been trying to figure out the general form of a slanted parabola, but what I've gotten doesn't look like it would be accurate:$$(x-h)^2+(y-k)^2=\dfrac{d}{\sqrt{h}}$$Where $(h,k)$ is the focus, ...
0
votes
1answer
16 views

3-D plot of $0\leq x\leq 1,0\leq y\leq 1,0\leq z\leq 1$

I can't figure this out : When we plot the inequalities $0\leq x\leq 1,0\leq y\leq 1,0\leq z\leq 1$ graphically what do we obtain ? Kindly help..
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0answers
26 views

Real world application of slanted conics (parabolae especially)

I am writing a report on slanted conics of the form $$(x-h)^2+(y-k)^2= \dfrac{d}{\sqrt h}$$ Where $(h, k)$ is the focus, and $d$ is the directrix. Are there any real world applications for slanted ...
0
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1answer
31 views

Literally draw a function and convert it to x and y points arrays

I'm looking for free tool (eventually commercial) for drawing plot - I mean literally: with pencil. This plots are going to be for simple demonstration. This tool should convert my drawings to x and y ...
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0answers
54 views

graphing equations of $y$ instead of $x$

The problem I'm attempting is: Sketch the curves $\ x = y^2 − 4y$ and $\ x = 2y − y^2$, find their points of intersection, and find the area enclosed by the curves. I'm confused as to how to graph ...
0
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1answer
16 views

Polar coordinates doubt (Graph of $r \le 1$)

I have a doubt. I have to plot the graph of $r \le 1$. Now, according to me, it should be a circular disc with center origin and radius 1 unit. But, some of my friends say that it should be the whole ...
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1answer
36 views

How are graphs drawable?

Drawing some graphs in Cartesian Coordinate system for a College Algebra class, and wondering: How are graphs even drawable? Considering that the points that make up graphs have infinitesimal size ...
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0answers
9 views

Creating contour and gradient map

I have a requirement where, i have been given data set against X, Y Coordinate of a plane. This value is temperature at a point x,y. Now i am suppose to draw a graph with gradient color which displays ...
0
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2answers
38 views

How to make your own supply/demand graphs on a computer?

This is an econ question but I think you guys might have the solution. I am writing an economics paper and I need to show, in my theory, shifts in the supply and demand that I predict. I don't have ...
0
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1answer
28 views

How to obtain and graph a function that first grows exponentially and then decays exponentially?

I would like to know what the equation of a curve is if it grows exponentially (let's say it doubles each time). This would be: $f(x)=2^x$ But then I would like the line to exponentially decay (let ...
0
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0answers
28 views

How would the graph of $w=e^{z^2}$ look?

If $W = e^{z^2}$, how would the $W$ graph look like on $W$ space. I mean the angle is $2xy$, radius is $e^{x^2-y^2}$. To avoid repetitive value you would set a limit from $2xy$ to $(2xy + 2\pi)$. ...
0
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0answers
22 views

Kinematics(Newtons laws of motion - acceleration) - Practical

Note: initial velocity = 0ms^-1 , (S= displacement) I am trying yo plot a graph of a practical i have earlier done( varying inclination angle and measuring time taken to displace the whole incline), ...
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0answers
22 views

How to find the right way to pick a random selection

I love the website AnyDice (http://anydice.com). When I needed to make a dice game, it saved me hours of coding and testing. Now, I need something similar, but not for dice. I'm trying to do a ...
0
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4answers
42 views

Graph r=6sin(θ)

I'm stuck on this one. I've tried converting it to Cartesian coordinates but I couldn't. I know I could figure it out by testing a bunch of values for θ, but I'd like to know how to do it a better ...
0
votes
1answer
14 views

Maximum of a cosine graph

I am working on part b). I have determined, by graphing, that the maximum value is 4 (at x=0, y=4; the max point is 0,4) Now, to find an expression for part b, I was trying to find the period of ...
2
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1answer
34 views

Finding the phase shift of a cosine function, given the graph

Here is what I have found so far: Vertical Displacement = 2 units down (-2) Amplitude = 4 Period = 2pi/3 I am now trying to find the phase shift. I moved the 'working x-axis' 2 units down, in ...
5
votes
3answers
112 views

Why does $\sin(\cos x)=\cos(\sin y)$ result in a lattice of circles?

Using Desmos graphing, I made an equation $\sin(\cos x)=\cos(\sin y)$ (here) which resulted in a strange lattice of symbols. I know that the trigonometric functions relate a triangle's sides to its ...
0
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0answers
16 views

ax + by >= z representation

I wanted to know if this inequality had a 3 dimensions spatial representation : aX + bY >= Z With X, Y and Z spatial parameters and a and b real numbers. Wolframe doesen't seem to give any ...
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0answers
15 views

Maple Interactive Plot Builder

I'm using Maple and have made several plots in my document. When I remove output and run it through (by clicking !!!), the "interactive plot builder: specify expressions" dialog box keeps on popping ...
0
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2answers
25 views

Proving a particular case of AM-GM graphically

Sketch a graph of $y = \ln x$ and hence explain why $$\frac{\ln a + 2 \ln b}{3} \le \ln\frac{a + 2b}{3}$$ I understand that $\ln $ is a strictly increasing function and $x > y \implies \ln x ...
3
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2answers
34 views

Graph of $f(x)$ given, find graph of $f(|x|)$

I know the graph of $f(x)=x^2-2x$. Google calculator https://www.google.com/#q=graph+of+x%5E2-2x But how can I find the graph of $f(|x|)=|x|^2-2|x|$? What is the best method to approach here? ...
2
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2answers
92 views

I got this “parabolic” curve from a book but cannot find the right equation for it

The diagram below is taken from a book on Indian Stupa architecture. It says that the profile is a "parabolic" one. I have tried y=x^2 and varied the domains ox x and y but couldn't find the right ...
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2answers
26 views

Procedure to find a level curves

I'm having trouble finding level curves. What's the procedure? In this case, for example: $z=x^2+y^2=k$ $\hookrightarrow y=\sqrt(k-x^2)$ Then I sketch this based on knowing the formulas of ...