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1
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87
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Disagreement between SciPy quaternion and Wolfram
I'm calculating rotation quaternions from Euler angles in Python using SciPy and trying to validate against an external source (Wolfram Alpha).
This Scipy code gives me one answer:
from scipy.spatial....
0
votes
1
answer
74
views
How to solve truth tables in Wolfram Alpha? [closed]
How can I build a truth table out of this formula in Wolfram Alpha:
((A and(if B then C)) or (C and not A))
0
votes
1
answer
50
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how to calculate summation of a polynomial up to say n = 10 in WolframAlpha
I want to calculate the following summation up to n=10.
Figure 1
I know one way is to get the simplified expression but in many cases they may not be available. Is there another way to do it in ...
0
votes
1
answer
81
views
Maximize function with SymPy - crank rod application
I want to know the worst case for a crank rod application.
The force Ft in the connecting rod is given by:
And I want to know its maximum.
I tried to solve it either on Wolfram Alpha or with SymPy. ...
0
votes
1
answer
107
views
Solution of Consumer problem in Wolfram Mathematica doesn't work
I'm trying to solve a contrained consumer problem with Cobb-Douglas preferences with Wolfram Mathematica 13.1. This problem is simple and can be solved analyticaly.
But my code doesn't work.
Utility = ...
0
votes
0
answers
100
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Using WolframAlpha with sympy to solve factorable quintics
While trying to solve some factorable quintics with sympy, I noticed that it doesn't always find every solution, while wolframalpha does. Is there a way to use the softwares together, do something ...
0
votes
1
answer
82
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I'm getting a negative part in Time complexity function. Is the solution of the Time complexity of this Recurrence relation correct?
I tried to find the Time complexity of this Recurrence relation [T(n) = 7T(n/2) + n^2] by using Akra Bazzi method .But I am not sure if it's correct or not. Can someone please review the solution and ...
1
vote
0
answers
69
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Using the Wolfram API in python to obtain directions between multiple (lat, lng) points
I am trying to get the directions between multiple (lat, lng) points in python using the Wolfram API. I know this works on the wolfram notebook but I was wondering how I could adapt it to work with ...
0
votes
1
answer
108
views
How to 3D plot a 2 parameter function that includes a definitive integral, using Wolfram Alpha?
I'm trying to plot the following function using Wolfram Alpha:
I have used the following natural language query:
plot (x^2 − ( Integrate sqrt(1 − t) ) , for x from 0 to 5, for y from -4 to 1)
I'm ...
2
votes
0
answers
64
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Wolfram Alpha API giving different data than https://www.wolframalpha.com/
This is making my head explode. I am making a creating a small Python script the gives me a visualization of the geocentric universe based on the visible placement of the planets on earth. I use ...
0
votes
1
answer
83
views
Why Wolfram Cloud doesn't simplify below BBP type sum, which I came up with? [closed]
Why Wolfram Cloud don't simplify below BBP type sum, which I came up with:
simplify Sum((1/81)^(k+1)*(9/(2*k+1)+1/(2*k+2)),k = 0 .. infinity)
to
2*log(3) - 3*log(2)
?
I would expect to see in the ...
0
votes
1
answer
100
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How to get a solution without having an integral in the solution using dsolve of Sympy
I am trying to solve simple first order differential equation using Sympy. But it does not give a closed form solution i.e., still have integral inside the solution. Same happens even after applying ...
1
vote
1
answer
2k
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np.linalg.svd is giving me wrong results
so I am trying to learn how SVD work to use it in PCA (principle component analysis), but the problem is that it seam I get wrong results, I tryied using np.linalg.svd and this is my code :
A = np....
0
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1
answer
64
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How to solve finding quickest route physics problem [closed]
I am currently facing a physics problem that I am not sure of how to solve, and also, when I tried to put my system of equations into WolframAlpha, it didn't understand that it was a system of ...
1
vote
1
answer
406
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numpy and Wolfram Alpha give different eigenvectors
For the following matrix, I tried to get eigen values and eigenvectors from Numpy and Wolfram Alpha, respectively. The eigen values are the same, but the eigenvectors are different.
Results from Numpy:...