kandi X-RAY | wolframalpha Summary
kandi X-RAY | wolframalpha Summary
wolframalpha
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wolframalpha Examples and Code Snippets
Community Discussions
Trending Discussions on wolframalpha
QUESTION
I am trying to compute the divergence of a vector field:
...ANSWER
Answered 2021-Jun-15 at 15:26Let me 1. explain the reason behind this observation, and 2. how to fix it.
Reason:One needs to be careful about how the data is oriented when computing the divergence (or the gradient in general), since it is important to compute the gradient along the correct axis to obtain a physically valid result.
np.meshgrid can output the mesh in two ways, depending on how you set the index parameter
Index "xy" : Here, for every y value, we sweep the x-values.QUESTION
I am trying to access the value field in on wolfram website https://www.wolframalpha.com/calculators/triple-integral-calculator
I wanted to access each of those 4 fields and copy each to a list in python. I am struggling at getting to the value.
And here is my code and what I have tried so far:
...ANSWER
Answered 2021-Jun-11 at 10:25To get all 4 values from into a list you can use:
QUESTION
I am test a solidity program, which deals with very large numbers (1e17).
The formula I'm testing is the following : int(1e17*(100-3)/(100-1))
WolframAlpha and the Solidity language tell me that it's equivalent to 97979797979797979.
The test fails however because Python returns 97979797979797984.
How can I get the right value with Python ?
...ANSWER
Answered 2021-May-18 at 03:43In this case, the fractions
module works well here, since its division between two numbers is exact, in that it preserves the precision of the result.
QUESTION
Here is a minimal working example:
...ANSWER
Answered 2021-Apr-01 at 16:10It's a floating-point problem. If instead you use
QUESTION
Say I have an equation:
a^x + b^x + c^x = n
Since I know a, b, c and n, is there a way to solve for x?
I have been struggling with this problem for a while now, and I can't seem to find a solution online.
My current method is to iterate over X until the left side is "close enough" to n. The method is pretty slow and in an already computationally difficult algorithm.
Example:
3^x + 5^x + 7^x = 83
How do i go about solving for x. (2 in this case) I tried the equation in WolframAlpha and it seems to know how to solve it, but any other program fails to do so.
I probably should also mention that X is not an integer (mostly in 0.01 to 0.05 range in my case).
...ANSWER
Answered 2021-Mar-17 at 23:21You can use scipy library. You can install it using command pip install scipy
Then, this code will work:
QUESTION
I have gotten this code from an article on the internet and have finished troubleshooting it, now it runs with an exit code 0. It doesn't do anything, like greet or ask for an input or nothing. It just runs and gives the exit code.
I have had problems with installing ecapture, it seems a lot of people with Python 3.9 have had this problem so I have commented it out.
This is the source from which I got the code.
https://towardsdatascience.com/how-to-build-your-own-ai-personal-assistant-using-python-f57247b4494b
...ANSWER
Answered 2021-Mar-02 at 06:44Your indentation is wrong. You have put if __name__ == "__main__"
inside your wishMe
function. Put is outside and it should work fine.
QUESTION
I tried to calculate the numeric values of the result of the solve
function. In WolframAlpha it is called "Approximate forms".
This are my equations:
...ANSWER
Answered 2021-Feb-19 at 12:01The N function can only be applied to sympy expressions, not lists or dicts. You can use list/dict comprehensions to rebuild the solution data structure like this:
QUESTION
If I run this code in Python 3.8.6 I get the output False
:
ANSWER
Answered 2021-Feb-07 at 20:51Rounding error. If you want to know precisely go read the IEEE 754 specification. Your numbers are so small they are in the subnormal range and have 5-10 bits of precision in your examples. Floats in the normal range have 53 bits of precision.
If you look at the two values using float.hex()
it shows their exact binary representation:
QUESTION
#include
#include
using namespace std;
complex integral(complex (*f)(complex const &x), complex l, complex u, size_t n)
{
complex step = (u - l) / (double) n;
complex area(0, 0);
for (size_t i = 0; i < n; i++) {
complex inner = l + (i + 0.5) * step;
area = area + f(inner) / inner * step;
}
return area;
}
int main()
{
complex l(0, 0);
complex u(2, 1);
cout << integral(cos, l, u, 100);
}
...ANSWER
Answered 2021-Feb-03 at 14:40As was commented, dividing by inner
was an extraneous step.
QUESTION
I'm tyring to import wolfamalpha into my code but it gives a error saying:
...ANSWER
Answered 2021-Feb-01 at 17:13When you run your python file, are you sure that you are using the correct python interpreter that you performed the pip install wolframalpha to? It sounds like you may have multiple versions of python on your machine and there is a mismatch. If you are using VSCode, it is easy to see which interpreter is running on the bottom of the screen, which may help you debug the issue.
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Install wolframalpha
You can use wolframalpha like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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