# Questions tagged [homework]

Homework questions are welcome, as long as they are asked honestly, explain the problem, and show sufficient effort. Please do not use this as the only tag for a question. Please do not add this tag to questions by other people unless they explicitly say that their question is part of their homework.

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### Double integral [closed]

I am trying to use mathematica to verify a math problem which is a double integral: $$\int \int_D (3x+4)^4 \delta x\delta y$$ with $$0 \leq x \leq 4, 0 \leq y \leq 4,$$ I tried the following: -...
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### Drawing function that rotates around y-axis with coordinate transform

At last I solved a math problem and trying to illustrate it in Mathematica TO NOT FORGET. I used that code. I works and I get a cake-form. But I think it's missing a big $x$ and a big $y$ axis in the ...
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### How can I use Histogram and Histogram3D on an image?

I have a .jpg image named r. I am using the following code to plot a histogram: ...
74 views

### Plot moments as a function of bin size?

I need to plot moments of a distribution as a function of bin size to show whether or not the tails of this data set are Gaussian. My data is in [pastebin.com/nzCs5BwE.] Here is how I've plotted ...
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### Variable passing

I am having trouble understanding how variables are passed in as parameters. My goal is to create a function f(logical,x,y,z) = Evaluate [logical(x,y,z)] From ...
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### Reflecting the trace of a polynomial about a vertical line [closed]

I am doing this question and up to $b$ and $c$ and I am wondering how I can reflect the graph, I managed to do part $a$. I know the equation for part $b$ is ...
40 views

### Plotting DSolve solution on Vector Field [duplicate]

I created a Vector Field for the given problem: Then I solved the problem with certain parameters using the DSolve command, receiving this solution: I want to know how I can plot this solution on ...
763 views

### Using Euler's Method [duplicate]

Relatively new with Mathematica and trying to finish this problem, this is the second problem, the previous was the same questions, but a different equation "x-y." I was able to complete that one with ...
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### Writing the equation of a function from its plot [closed]

Write the equation of the function graphed here, leave in factored form I think it would be a cosine function, but the way it's shifted to the left makes me question that. I also don't know what "...
957 views

### Solving an initial value problem [duplicate]

I am generally confused on how to solve this problem, I was given very little background on how to solve an initial value problem through Mathematica. I believe I have created the graph below ...
118 views

### Rate of flow problem

At time t = 0, a 1500-gallon tank contains 1000 gallons of old water. New water flows in at a rate of g[t] == (K E^t)/(0.5 + E^t) gallons/hour. But water is ...
517 views

### Solving a projectile trajectory problem [closed]

Hoping someone is able to help me with this problem. I will post the problem and what I am having issues with to allow you to better understand the problem. So I graphed this using the parametric ...
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### Truncate multivariate polynomials with real powers

Two months ago I asked a way to truncate a polynomial to a given degree. @Stitch answered my question by writing a program which contained the following function: ...
168 views

### Visualization of numerical integration

I have to do a project about numerical integration. My problem is visualizing my method. My code: ...
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### Finding all the perfect integers below 10000 [closed]

I have a homework problem about perfect numbers. I simply did it, but I need to use Divisors, Most, ...
250 views

### Is there a way to select the highest exponent of a polynomial expression?

I have a problem to program a particular kind of expression: Sum[1/(k n) (HS[t^k,x^k])^n,{n,1,Infinity},{k,1,Infinity}] where HS[t_,x_] is a polynomial function ...
145 views

### how to write the Max of this function / How can i use Max[]

Hi every one I really need your help in this question write the function in the picture nction in Mathematica because I need to make graph... ?? could anyone help me ? I'd appreciate some help. ...
218 views

### How to draw 3 vectors using Graphics3D? [duplicate]

Given two vectors A = {1, 0, -2} B = {0, 1, 1} C is the cross product of A and B, so C = {2, -1, -1} Plot vectors ...
Graph the curve $x=\sin(t) + \sin(1.5 t), y=\cos(t)$ and find its length correct to four decimal places I tried Parametric Plot but it keeps telling me there's arguments against it. ...