# All Questions

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32 views

### A ListPlot with multiple lines, fill to the axis, no thickness of the lines, and all fill in the same color

I have created the ListPlot shown below (from data in a multidimensional list), but it is not exactly what I aimed for. I aimed for everything shown, except I do not want any lines to border the ...
20 views

### Troubleshooting backward/forward mode of differentiation

When I try to generate my finite element, the following warning/error appears when I want to define the tangent matrix, using the standard comand K=SMSD[R,a,j]: <...
86 views

### How to set up a Fourier transform?

I am having trouble figuring out how to set up the Fourier transform to: ...
27 views

### How to plot the Imaginary values of a function

When i use the following code in Mathematica9 to plot the imaginary values of the function all the values are plotted on the Y axis. It is seen that the X values are taken as zero. ...
112 views

### Finding recurrence formulas from procedural code and output lists associated with integer sequences

This code outputs 37 sequences and takes about 15-minutes to run. I would like to be able to see how many and which variables { i, j, k, m, n } each of the 37 ...
35 views

### Maximize violate constraint of non approximated function

here is my code Maximize[{-(10/17) - x + (20 (1 + x))/(17 (2 + x)), 0 <= x <= 1.5}, x] The result I got: {6.66134*10^-16, {x -> -9.79755*10^-16}} As you ...
33 views

### Assuming x real, simplifying or refining Im[1/(x+i)] doesn't yield anything

I think it is straightforward from the title, Simplify[Im[1/(x+I)], x > 0] spits out, Im[1/(x+I)] while I would have ...
32 views

### Highpass/lowpass a set of {N,2} data, where first column is the time?

How can I highpass/lowpass a set of data, where the sample rate is not fixed, but is the first column of data, ie when data = {{t1,x1},{t2,x2},...{tN,xN}}?
41 views

### How to remove curly brackets in a two dimensional array near the edges?

Suppose I have a matrix {{1,2,3},{4,5,6}}. I want to remove the curly brackets near the edges, i.e., I want an output as '{1,2,3},{4,5,6}'. Somebody please help me to solve it.
277 views

45 views

### Problem with importing data and interpolating it [on hold]

Here is the code data = Import["D:\\Third Semester\\q1.patxt", "Table"] And here is the imported data file with properly arranged data