23,960 reputation
23165
bio website sethares.engr.wisc.edu
location Wisconsin
age 59
visits member for 2 years, 5 months
seen 3 hours ago

enter image description here

The code to generate this cartoon is in my answer to the XKCD-ification question. When executed in Mathematica, there is even a secret mouse-over message.


6h
comment Coefficients of a polynomial in powers of 10
Try making the numbers floating point rather than integers, i.e., 10000.0 and 1278.0 instead of 10000 and 1278
21h
comment How do I plot results of complicated calculations in Mathematica?
Have you looked at the help file for NDSolve? There are many examples there that plot the output of the ODE. Maybe you could mimic one of these?
2d
comment Is there any function in Wolfram Mathematica simmilar to fft.fftfreq (Python)
Here is a question and answer that shows how to build the correct frequency vector: mathematica.stackexchange.com/a/33209/1783
2d
comment Help needed for solving nonlinear ODEs
Look up DSolve and/or NDSolve.
2d
revised PEANO Integers using successor function
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2d
revised PEANO Integers using successor function
added 161 characters in body
2d
answered PEANO Integers using successor function
2d
comment Function Expectation
The Expectation operator is an integral. Can you write out the integration that you are trying to solve? Maybe it will be easier to solve the problem in this form.
2d
comment coordinate system problem
Here is an extended discussion of the various graphics/image coordinate systems: mathematica.stackexchange.com/a/32377/1783
Dec
18
comment Discrete Fourier Transform with x axis data?
You might find the answer here useful to understand what the DFT is doing. mathematica.stackexchange.com/q/33574/1783
Dec
18
answered Colorize an image using two parameters
Dec
18
comment Import Data using selection criteria
Look at Select.
Dec
17
comment Mathematica 10 ListPointPlot3D PlotTheme bug?
Can you give the code you used to cause this problem to see if others can reproduce it?
Dec
17
comment How can I make an animation with data points imported from txt file using ListAnimate/ListPointPlot3D?
Can you plot a single frame of the animation you want to show? If so, please show the code for that. If not, try to show where the problem lies.
Dec
17
comment Plotting the vector field of a function
VectorPlot[Evaluate[Grad[{x^2*y - y^3}, {x, y}]], {x, -3, 3}, {y, -3, 3}]
Dec
16
revised GPA calculation from a set of randomly generated marks obtained
added 133 characters in body
Dec
16
comment Konno model (linear programming applied finance )
Maybe the tutorial on linear programming would help? reference.wolfram.com/language/tutorial/…
Dec
16
comment how to get continuation of square matrices with periodic diagonal band automatically?
You might be able to do better with FindLinearRecurrence than with the Tally approach. In any case, glad to see you've come up with something you can use.
Dec
16
comment Bug in ArcLength?
And ArcLength[Line[{{0, 0}, {1, 0}, {2.000001, 0}}]] is back to 2. again...
Dec
16
comment How to find the direction of the outward normal in a point of the boundary of a 2D region?
@Michael E2 -- Agreed. It would be nice to have a RegionNormal function that gives the perpendicular to any region at a point!