Top new questions this week:
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After upgrading to mathematica 12, this integral gives the wrong result, also with other types of similar integrals.
Integrate[t[2]*Exp[t[2]],t[2]]
The output
Exp[t[2]^2]/2
is wrong (it should ...
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Through a copy of some code from an answer on this site I discovered the existence of:
\[FormalN]
The documentation describes it as follows:
"Used to represent a formal parameter that will never ...
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Recently I asked a question about the morphing between two functions and got two excellent answers. The accepted answer is using the continuous optimal transport theory. This seems to be very suitable ...
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I have a curve in parametric form:
ParametricPlot[{(1 - Cos[2 \[Pi] s]) Sin[2 \[Pi] s],
Cos[2 \[Pi] s] (Sin[2 \[Pi] s] + 1)}, {s, 0, 1}, Axes -> False,
PlotStyle -> Black]
This gives:
...
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Using Simplify with certain trivial assumptions makes Mathematica forget that a given matrix is Hermitian. See the minimal example below:
expr = Exp[I*2*π*Re[n]]
mat = {{Re[n], a*expr}, ...
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Can Mathematica be used to create diagrams of drift diffusion of the kind shown, including histograms showing the response-time distributions?
The distributions capture the time taken by a random ...
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Is there a simple way to change the color of the region where two Points overlap?
For example in Graphics[{PointSize[2], Point[{1, 1}], Point[{0, 0}]}], the resulting two points have an area where ...
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Greatest hits from previous weeks:
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Today, I found the Euler Project. Problem #2 is
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:
1, ...
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For instance, is there some way I can say "let A and B be arbitrary real $m\times n$ and $k\times m$ matrices, Simplify[Transpose[Transpose[A].Transpose[B]]]" and Mathematica would simplify it to B.A?
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I'm new to Mathematica, and I'm finding it difficult to plot an ellipse.
I tried using
Plot[(x/5)^2 + (y/3)^2 == 1, {x, -5, 5}, {y, -3, 3}]
but I'm getting some errors. Is there something wrong ...
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The basic multivariable Taylor expansion formula around a point is as follows:
$$
f(\mathbf r + \mathbf a) = f(\mathbf r) + (\mathbf a \cdot \nabla )f(\mathbf r) + \frac{1}{2!}(\mathbf a \cdot ...
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In today's news, scientists found a bright object on one of Curiosity's photos (it's near the bottom of the picture below). It's a bit tricky to find - I actually spent quite some time staring at the ...
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https://blog.stephenwolfram.com/2019/05/launching-today-free-wolfram-engine-for-developers/
http://www.wolfram.com/engine/
The Free Wolfram Engine for Developers is available for pre-production ...
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How can I express a trigonometric equation / identity in terms of a given trigonometric function?
using following trigonometric identities
Sin[x]^2+Cos[x]^2==1
Sin[x]/Cos[x]==Tan[x]
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Can you answer these questions?
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NonlinearModelFit obviously does a lot of internal calculations at each step, including determining the Response (the value of the fitting function for the current values of the parameters evaluated ...
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I am fairly new to Mathematica. I have a quick inquiry. The code is simple and just 3 lines. Trying to do a replacement rule as follows
ruletrr = intsl[exp_] :> Integrate[exp, {u, u, 1}]
...
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A support case with the identification [CASE:4347836] was created.
I just noted this little puzzle on twitter by Brillant.org:
\begin{align} A B C\\+ BCA\\ = CDE \end{align}
Given that $A$ is ...
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