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Why can e^x be plotted but not xe^x? [closed]

Plot[e^x, {x, -1, 10}] produces a plot while Plot[xe^x, {x, -1, 10}] only draws axes. Can someone please explain why there is no ...
• 43
35 views

How get this kind of group opener?

Some notebooks of mine have Section (and Subsection) cells formatted like the following, so that clicking on the icon to the right of the Section's title opens the entire group of cells in that ...
• 11.6k
36 views

Remove sublists with duplicate elements within

I have this list DeleteDuplicates[Sort[#] & /@ Tuples[Range[4], 3]] which gives me {{1, 1, 1}, {1, 1, 2}, {1, 1, 3}, {1, 1, 4}, {1, 2, 2}, {1, 2, 3}, {1, 2, 4},...
• 426
1 vote
42 views

FunctionPoles with arbitrary undefined function

Good day everyone. I have very simple question about behaviour of the functions FunctionPoles, FunctionMeromorphic e.t.c. Can these functions work properly with undefined functions? For example when I ...
• 23
36 views

PlotLegends does not work with StringPadRight?

I'm trying to create a plot legend where the rows contains multiple items, and those items have the same width, so that they appears to be in column. It should work with String Pad Right but for some ...
40 views

Drift-diffusion ODEs with two boundary conditions

I am trying to solve drift-diffusion equatons (Poisson's equation, continuity equations for electrons and holes and Kirchhoff's equation) for a reversely biased diode in a stationary state (no time ...
• 53
80 views

Adjust graphs inside GraphicsRow to be the same scale?

I want to draw a picture with GraphicsRow function in Mathematica. A simple example shows as follows ...
• 229
28 views

General solution for X in trapezoid 90 degree [closed]

Could you please help to find a general solution for X, no matter if a > b or a < b ? []https://i.stack.imgur.com/dDUEf.png[1] Thank you!
1 vote
68 views

How to place several plots side by side?

I want to place multiple MatrixPlot results side by side. Here's the example code: ...
• 229
49 views

Adjusting spacing of one row in LineLegend?

Background I have the following plot: ...
• 547
16 views

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• 8,544
52 views

How to switch Tan[x] for Sin[x]/Cos[x] without Mathematica changing the latter for the former?

When I ask Mathematica to do this: (Sin[2 x] - Tan[2 x])/x^3 /. Tan[x_] -> Sin[x]/Cos[x] It makes no change because Mathematica interprets ...
• 5,061
16 views

Nested RowBox in MakeExpression reports error when I define my own curl operator, but the single RowBox in MakeExpression works well

I want to define my own vector notation so that the input \[Del] \[Cross] a outputs curl[a] while the ...
• 1
99 views

How to wrap text of large headings in dataset?

I am trying to achieve the following effect produced in Excel in Wolfram Dataset: The following attempt doesn't work: ...
• 8,707
1 vote
18 views

Periodogram and frequency

On the x axis of periodogram, one should have either a period or frequency. What frequency is used in Periodogram --- angular or ...
• 3,486
61 views

Is it possible to ask Mathematica to find those points $(x,y)$ at which the given function may reach its global/local extrema?

I have this two-variable function $f(x,y)$ for {x,-Pi,Pi} and {y,-Pi,Pi} in which $\{a,b,c\}$ are real parameters (can be ...
• 93
25 views

Kernel crash during Interpolation

I have a kinda large code of a solver, and after somewhat random amount of iterations it causes Kernel to shutdown with a "pop" sound and no messages. I tracked the exact line that caused it,...
• 837
26 views

Plotting a PDF with discrete non-integer values

I can plot the PDF of a continuous distribution like so d0 = NormalDistribution[0, 1] Plot[PDF[d0, x], {x, -3, 3}] I can plot the PDF of a discrete distribution ...
• 111
59 views

Access item of multidimensional table

I am working on an program that uses a parametric dimensions table created like this: t = Table @@ Prepend[{2, 3, 4, 5}, 0] No problem to get the value of a given ...
1 vote
45 views

• 11
44 views

• 31
36 views

Cubic Bezier Curve is not plotting correctly in Wolfram alpha [closed]

I'm trying to plot a cubic bezier curve to understand if the equation is correct. I have the following equation, which has set p0..p3 to 0.5, which should result in a linear curve. ...
• 101
80 views

Partion of lists

I have a list like this and want to split it into three sublists. One should contain only the first element the 2nd should contain 8 elements starting from 1.944 to 11 and the third should start from ...
• 73
1 vote