Questions tagged [wolfram-alpha-queries]
Use this for questions about calling Wolfram Alpha from Mathematica. Questions about Wolfram Alpha itself are off-topic.
185
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Exporting results containing Entities to JSON?
I am looking for a straightforward way to export results from functions like ImageContents, FacialFeatures, and WolframAlpha - symbols that return stuff containing knowledgebase content.
Aside from ...
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1
vote
1
answer
52
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WolframAlpha XML parsing error
I am using the WolframAlpha command to automated solution sets of homework exercises. Here is an sample usage, although this can happen with many different examples:...
- 1,049
1
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1
answer
80
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4
votes
1
answer
151
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Empty .png figures generated by a function "PlotWithGrid" whereas no problem with Export function
I have an issue about a .wls script that I can't manage to solve for the moment. I execute it with wolframscript interpeter on ...
- 1
0
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0
answers
39
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Wolfram script exported from a Mathematica Notebook : errors actually warnings?
I have exported with the following script put at the beginning of my Mathematica notebook :
...
0
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0
answers
49
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How to access the data object returned from a Wolfram query?
I want to access information regarding the population of the world, over the last 10,000 years, and then visualize it with some annotations.
In particular case, I want to:
grab world population data ...
- 113
0
votes
2
answers
81
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Integral of the Poisson Kernal [closed]
I wish to solve the following definite integral:
$\int^{b}_a P_r(\theta-\phi) d\phi$
,where $P_r(\theta-\phi) = \frac{1-r^2}{1 + r^2 -2r cos(\theta - \phi)}$ is the Poisson kernel. This is something ...
- 111
4
votes
1
answer
433
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Why does MMA fail to find a solution but WA does?
I am looking for $n$, where
$$\dfrac{2^{-3 n-2} \pi ^{n+1}}{(n+1)!}<\dfrac{1}{10000000000000000}$$
We can just test values of $n$ and find the smallest $n = 13$, or any $n \gt 13$ or can use ...
- 2,086
1
vote
0
answers
73
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WolframAlpha website calculator powers
Would be surprised if this hasn't asked before. Also, not sure if tag is correct.
With my graduation I lost access to the free university Mathematica. Today, I was too lazy to do a simple matrix ...
- 887
-4
votes
2
answers
157
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Wolfram Mathematica Code please [closed]
Consider two natural numbers of two-digits, like 46 and 96. They have the property that by exchanging the place of their digits and multiplying the so obtained numbers, we get the same product; i.e.,
<...
0
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0
answers
34
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please help me resolve find what method gives me a result for this
I have this mathematic problem: (124164a/300b/2360/.85)+(124164a/25b/2360/.85)+(124164a/55b/2360/.85)=3.81=(a/b/2360/.85)
And this is the result:
a≈87.4514, b≈0.0114422
I payed for WolframAlpha Pro ...
- 101
0
votes
1
answer
49
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Constructing Wolfram Alpha Query for Solar Position
When I use Mathematica calls to WolframAlpha, it clearly knows about the motion of the sun, so I can request the solar declination at any date/time:
But I'm having great difficulty crafting a query ...
- 53
1
vote
1
answer
143
views
Density of water at a given temperature and pressure
In Wolfram|Alpha if I write:
density water at 500°C and 100 atm
instantly I read:
30.92 kg/m^3 (kilograms per cubic meter)
...
- 181
0
votes
0
answers
75
views
Wolfram alpha query works online but not through mathematica?
Bit of a bizarre problem I'm having (well, more a question than a problem). I am trying to solve an integral, which I queried using the online wolfram alpha website. The input and output are ...
- 3
1
vote
0
answers
235
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Calculating double integral bounded by domain in Wolfram Alpha Notebook [closed]
If I want to compute Double Integral on a given region(See attached Picture)
How can I input this on Wolfram Alpha Notebook
- 19
0
votes
0
answers
62
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How can I show the calculation of the determinant of a matrix step by step? [duplicate]
I would like to emulate what Wolfram Alpha does in Mathematica.
Can you help me?
...
- 480
2
votes
0
answers
71
views
Engineering materials entity class
Are there any Entity Class like EntityClassList["Mineral"] to get physical properties of "Materials" like steel alloys, polymers, ceramics or ...
- 111
4
votes
2
answers
2k
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Convert WolframAlpha output to $\LaTeX$
I am using WolframAlpha app on my iPad and would like to confirm that there is no way to convert its output to $\LaTeX$ form?
It would be nice to have this feature so as to copy it to Stack Exchange ...
- 175
2
votes
2
answers
173
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Wolfram|Alpha query doesn't compute answer
I typed
== integral (e^cosx)((cosx)^2)(sinx) from x=0 to pi
into Mathematica, but it doesn't seem to generate an answer. What did I do wrong?
I entered the query ...
- 23
2
votes
1
answer
133
views
Plot a sum of vectors using inline free format or wolframalpha. What is the hidden code?
Using Wolframalpha or inline free format you can obtain a nice representation of a sum of vectors. An example is shown below.
Whish is the hidden code? (or a code that make the same representation). ...
1
vote
1
answer
71
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General: 2456 is not a valid variable [closed]
... is not a valid variable i dont know whats happend
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1
vote
0
answers
51
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How to make this expression?
How to code this expression in WolframAlpha. I am interested in how to code the second sum, because it contains a boolean expression:
$$\sum_{i=1}^{100}{\sum_{j>n}}{x_{i}x_{j}}$$
2
votes
2
answers
233
views
Why doesn't Mathematica provide an answer while Wolfram|Alpha does, concerning a series convergence?
Among other series I've been working on, I was asked to find whether
$$\sum_n 1-\cos(\frac{\pi}{n})$$
converged, and Mathematica's output to ...
- 121
1
vote
4
answers
159
views
How can one expand an arbitrary boolean combination into the $2^n$ atoms of the associated boolean algebra of size $2^{2^n}$?
The answer of user250938 to Can one usefully apply the Boolean functions of Mathematica to measurable Boolean sets? and the second comment of
Monroe Eskew to the answer to https://mathoverflow.net/...
- 2,235
1
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1
answer
247
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The Branch Cut of the Complex Logarithm Used by Default in Wolfram Alpha
The title says it all: what branch cut (like which value of $k$ in $\ln(z)=\ln(r)+i(\theta+2\pi k))$ does Wolfram Alpha use by default in calculating the complex logarithm. I would say "principal ...
- 231
0
votes
1
answer
437
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step-by-step solution unavailable (( possible intermediate steps ))
When using the (( WolframAlpha["integrate 1/(2+Sqrt[1-x]+Sqrt[1+x])"])) function to find integration steps, this message appears to me what is the explanation and ...
- 574
4
votes
0
answers
54
views
What is the current WolframAlpha server capacity?
Considering the increasing workload WolframAlpha is now receiving as it is getting more tightly integrated into the Wolfram language. With things like Entities even ...
- 8,247
4
votes
0
answers
217
views
How to change the Wolfram Alpha query timeout for Ctrl+=?
Sometimes retrieving results from Wolfram Alpha takes time and the default query timeout is not sufficient.
For engagement with Wolfram Alpha implicitly for expr ...
- 8,247
1
vote
1
answer
45
views
How can I price of 100 EUR in RON on 1st of every month back to 4 years
I would like to see the difference between 450 RON and 100EUR converted to RON on 1st of every month back to 4 years.
possibly with a cumulated chart...
- 303
3
votes
1
answer
504
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Difference between free-form input via WolframAlpha[] and CTRL+=
WolframAlpha["query"] - https://reference.wolfram.com/language/ref/WolframAlpha.html
Free-form input - https://reference.wolfram.com/language/workflow/EnterFreeFormInput.html
For example:
...
- 973
2
votes
0
answers
875
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Step by step solution of a limit of a sequence - Calling Wolfram|Alpha in Mathematica
I'd like to visualiza the step-by-step solution of the following limit by calling Wolfram|Alpha in Mathematica, but I don't know how to specify that n is a positive integer variable:
...
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1
vote
1
answer
128
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WolframAlpha does not give stepwise solution for a simple twodimensional integral
Why does the behave this particular way:
...
- 3,642
0
votes
1
answer
77
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Quick Wolfram Question [closed]
This is my code so far:
For[i=2, i<10, i++, Solve[x^i == x+1 && x >0]]
I would like to sum up all the x values that it outputs. How can I do so?
1
vote
2
answers
476
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Is there a way to copy/paste an expression from Mathematica into Wolfram Alpha?
For example, I have the expression
$$\int_0^t \frac{\lambda e^{-\lambda x} (\lambda x)^{k-1}}{(k-1)!} \, dx$$
(written that way in Mathematica). Is there a simple way to copy/paste the (in this ...
- 111
3
votes
1
answer
166
views
Daylight hours vs calendar date
Is there a way in Mathematica or Wolfram Alpha to get a plot of daylight hours vs calendar date and rate of change of daylight hours vs calendar date. Lets say I want the plot for latitude 45 degrees ...
- 31
2
votes
2
answers
512
views
How to calculate complicated expression in WolframAlpha
I need to evaluate the limit:
$$\lim_{n\to\infty}\prod_{k=1}^\infty \left(1-\frac{n}{\left(\frac{n+\sqrt{n^2+4}}{2}\right)^k+\frac{n+\sqrt{n^2+4}}{2}}\right).$$
I could not type into WolframAlpha ...
- 23
4
votes
0
answers
91
views
U.S. Treasury Yield Curve via WolframAlfa
Disturbingly coincident with the U.S. Treasury Yield Curve's recent volatility and inversion, the previously highly reliable & available data from the Treasury's website at Treasury's website xml ...
- 13.7k
0
votes
2
answers
123
views
Wolfram Alpha missing solutions to a quadratic equation over the integers?
I don't have Mathematica, but Wolfram Alpha appears to miss integer solutions to bivariate quadratic equation:
solve over integers X^2 + 1672739 Y^2 = 4680419795530281540
returns only two pairs of ...
- 103
2
votes
1
answer
36
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3
votes
0
answers
103
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Querying WolframAlpha from WolframScript
Is it possible to query WolframAlpha from a wolframscript query? The following yields $Failed:
...
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1
vote
1
answer
152
views
How to create a find-and-replace code in Mathematica?
Let's say I have a group of X's characters that I want to cut down. I want to use a method similar to 'find-and-replace-all' tool from Word, which takes an amount of X's each time, deletes them, and ...
- 121
0
votes
1
answer
71
views
Could not solve this equation by Solve and also get nearly correct plot by Wolfram|Alpha [closed]
Input:
Solve[y'[x] == -(224.8 ((y[x]^2 - y[x]/10^11 - (0.000010385 x^3)/E^(2 x))/x^2)), y[x], x]
Output:
...
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votes
0
answers
84
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Is it possible to get the required mathematica code from wolfram alpha input?
It is very easy to get an out put in wolfram alpha if the input is very complicated and mathematica coding giving some problem. So is it possible to convert an wolfram alpha input to a standard ...
0
votes
1
answer
77
views
How do I obtain the characteristics and properties of an alloy? [closed]
I would like to obtain the characteristics and properties of the Alloy Chromel. How do I download that information from the database of Wolfram Alpha and then print it in a Mathematica Notebook?
...
- 377
2
votes
0
answers
61
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How to get the events and holidays occurred on a list of dates?
I have a list of 100 unix timestamps and I am trying to get all the events occurred on that time. The following code get an abort signal when a has 100 timestamps. Another problem is that when I run ...
- 519
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votes
2
answers
414
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Getting the full result from a Wolfram|Alpha query?
I'm trying to get the list of numbers using this query:
WolframAlpha[
"integers | perfect square and having 9 digits", {{"Result", 1}, "NumberData"}]
By ...
4
votes
1
answer
110
views
Discrepancy between area given by CountryData and GeoArea of FullPolygon
CountryData["US", "Area"]
puts the area of U.S. at $9.63\times 10^6 \textrm{ km}^2$, while
...
- 1,801
3
votes
1
answer
4k
views
Why can't I plot two graphs on the same plane in WolframAlpha?
When I plot these graphs separately everything is OK, but when I try to plot them simultaneously I get error. Why?
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votes
1
answer
132
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Unexpected omission by Wolfram Alpha [closed]
When Alpha is submitted the equation $a(a^2-1)=2b^2$, it unexpectedly forgets the integer solution $a=1,b=0$. What could explain this ?
http://www.wolframalpha.com/input/?i=a(a%5E2-1)%3D2b%5E2
- 111
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votes
2
answers
2k
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Wolfram says sum diverges, but Mathematica gives a numerical value for infinite sum [closed]
Take this sum for example:
$$\sum_{n=2}^\infty\frac1{\log(n!)}$$
Wolfram says that this does not converge by the comparison test. However, when I use Mathematica's ...
- 241