# All Questions

105 views

### cycloid parametric [closed]

How do I enter 3 parametric equations for cycloids corresponding to circles with radii 1, 2, and 4. I have tried ...
38 views

### Filtering out 'no solutions' after solving a high order polynomial

I am dealing with a fourth order polynomial. I get all of the desired out put however above a certain range I also get these - {}. From my understanding this means that there is no solution. I am ...
36 views

### Differentiation Help [closed]

I am having some trouble on my math assignment. The question has three parts, and I think have the correct answer on the first two parts, but the last one, I'm having trouble with. It says to ...
34 views

### remote kernel through SSH

Is it possible to setup connection to remote kernels through ssh? I'm able to SSH into the remote server(linux) and start a kernel in the terminal, but it can't connect back to my local front end. I ...
95 views

### How to force correct answers for Integrals of Cos[mx]*Cos[nx]?

This is a big problem if you do anything with a Fourier Series. This statement: Assuming[Element[{m, n}, Integers], Integrate[Cos[m*x]*Cos[n*x], {x, 0, 2 Pi}]] ...
30 views

### Import csv file and missing “” when importing [closed]

I am importing a csv file. When it imports and shows the import there are no quotes around the alpha characters or the date. Like this: {32856, 1, A, 10/1/2001, 1, 1, -54.4, , 4, 1, 1, 1, , , , \ ...
114 views

### Can I generate matrices with a constraint?

Say I want a way to generate matrices with the following properties, All non-diagonal elements are either $0,1,-1$ The diagonals are either $k$ or $k+1$ for some $k \in \mathbb{Z}^+$ for some $k$ ...
91 views

### Can't use my own discontinuous coefficient within NDSolve

I want to evaluate the pendulum's motion with changing equilibrium state given by eqilValue[t]: ...
48 views

### Plotting A Function Using A Given Number Of Points [closed]

i'm new to mathematica and am trying to figure out how I can plot something and specify the number of points on the plot. I want to plot the real root of an equation from a=0..1 using 500 points of ...
32 views

### Simplifying an inequality inside an answer by parts

I have the following piece of code where I'm evaluating a probability of a variable v being greater than some threshold under a Uniform distribution. ...
83 views

### How to implement kvo in Mathematica 10? [duplicate]

Key value coding and observing is something that other languages do well, like objective-c for instance. What's the best way to achieve something similar in Mathematica (if at all possible)? That is, ...
52 views

### Show legend on plot [duplicate]

I have a series of curve I'm plotting using ListPlot. For each plot I'm changing a variable called X. Is there anyway I could ...
55 views

### DSolve bvlim error due to Boundary condition at infinity

I am solving an Ode using Mathematica that has boundary condition at infinity which is why Mathematica is showing error message. Please help to tackle this problem. ...
34 views

### plotting the stable and unstable manifolds of a difference equation

I have a 2D non-linear system of difference equations for variables x and y defined as follows: ...
138 views

### Deleting missing data with CountryData

I need to delete all of the missing entries after executing this line: ...
22 views

### Probability of occurrence of an event [closed]

If n positive integers are taken and multiplied together then the probability that the product has 1,3,7 or 9 as it's last digit ?
23 views

### How to define a function with more than one equation in? [closed]

How do I define the first function where there are more than one equations in it with each with an inequality? And for the second question how do I graph the periodic extension, what is it?
68 views

### Using gamepad without dynamic

I am a novice using Mathematica. I program regularly using c like languages though. Now i work on a simulation of a vehicle. I have a loop that calculates the next state of the physical model every dt ...
206 views

### Negative integral of a positive function

For a parameter $t\in (0,1)$ $Assumptions = t ∈ Reals && t > 0 && t < 1 I define an obviously positive function$f(x)=\left| \Re ...
80 views

### Merging documentation from Workbench with handed-coded package

On the one hand, I have been writing my package (directly into the .m file) separately using the standard Mathematica front-end. My source .m files and the init.m files have the appropriate folder ...
183 views

### Why Infinity /. _?(# < 6 &) -> 0 replaces Infinity with ComplexInfinity?

Suppose I define a matrix: mat = { {Infinity, 4, 9}, {6, Infinity, 10}, {8, 9, Infinity} }; Now I want to replace all values smaller than ...
36 views

### Fix the position of the axes label [duplicate]

How can I set the position of the axes labels (X,Y,Z), so that, among other things, they do not overlap with the numbers in the axes? Here an easy example: ...
89 views