Questions tagged [wolfram-alpha-queries]
Use this for questions about calling Wolfram Alpha from Mathematica. Questions about Wolfram Alpha itself are off-topic.
153
questions
3
votes
1answer
80 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 ...
5
votes
3answers
215 views
What is the difference between Mathematica and WolframAlpha Notebook Edition?
I have a license for Mathematica through my college. Today I downloaded and installed a trial version of WolframAlpha Notebook Edition. According to this support page the notebook is supposed to ...
2
votes
2answers
136 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 ...
4
votes
0answers
49 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 ...
0
votes
2answers
55 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 ...
2
votes
1answer
34 views
2
votes
0answers
37 views
Querying WolframAlpha from WolframScript
Is it possible to query WolframAlpha from a wolframscript query? The following yields $Failed:
...
1
vote
1answer
66 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 ...
0
votes
1answer
62 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:
...
0
votes
0answers
30 views
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
1answer
59 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?
...
2
votes
0answers
44 views
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 ...
0
votes
2answers
166 views
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
1answer
88 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
vote
1answer
170 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?
0
votes
1answer
88 views
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
8
votes
2answers
2k views
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 ...
3
votes
0answers
64 views
CloudDeploy fails when using WolframAlpha as APIFunction
I am trying to create a Wolfram API that returns, for an input expression, how Wolfram Alpha interprets that input.
For example, given the string "1 plus 2", the API should return "1 + 2".
Locally, ...
1
vote
1answer
68 views
Plot with Wolfram Alpha Scientific Data
Now that Mathematica has already embedded Wolfram Alpha, so I'd like to plot a graph: "Air Density" - "Elevation".
I know that
yields
But I can't do that 10000 ...
1
vote
1answer
34 views
How I can define and arrange following linear equation?
We have:
Theta * (2L-K) = 0 Theta cannot be zero because it's angle parameters.
(2L-K)=0 then We can calculate L=K/2
How we can define this constraint in Wolfram|...
3
votes
4answers
191 views
Conditional Summations
I am not a math major, but for a networking class, I am taking I am required to do summations for probability. I know the logic but I don't know the mathematical theory to make this work. Using ...
5
votes
1answer
102 views
Confusion in finding the definite integral
So, I'm new to Mathematica. I tried evaluating the following definite integral. However the answer i get from wolfram alpha & mathematica are different.
Can someone please point out what I'm ...
1
vote
1answer
55 views
How can I compute how many primes of this kind are up to $N$?
In the following link:
https://oeis.org/A079796/b079796.txt
we can see the first 10,000 prime numbers $p$ with the property that both
$(3p)^2 + p^2 + 3^2$
and
$(3p)^2 - p^2 - 3^2$ are primes
...
0
votes
1answer
354 views
Step-by-step solution of a system of symbolic equations - Call Wolfram Alpha in Mathematica
I'm trying to get a step-by-step solution of a system of symbolic equations:
...
1
vote
0answers
158 views
How to query Wolfram Alpha to find projection of point on plane? [closed]
For example, the projection of the point $P=(1,2,3)$ on the plane $x+y+z=3$ is the point $Q=(0,1,2)$.
How do I ask Wolfram Alpha to compute this? I've tried "projection of point (1,2,3) on plane x+y+...
4
votes
4answers
2k views
How to ask WolframAlpha to find 'x such that p=32*x+1 is prime'
I want to find prime $p$ in form of $p=32 x+1$
How can I ask WolframAlpha for such $x$ that will fulfil this equation?
EDIT: let's say that $100$ or $n$ solutions is enough for me
EDIT2: I need x's ...
0
votes
1answer
162 views
Can I make Wolfram Alpha use a specific substitution when integrating? [closed]
Can I define the '$u = \dots$' for an integral?
For example when I integrate $\frac{x^3}{\sqrt{6 - x^2}}$ with respect to $x$, the program automatically sets $u = x^2$, how can I change this so it ...
2
votes
1answer
92 views
how to get historical data from wolfram alpha
The following command give historical data from 21th April 2017 to 19th April 2018. Which is about 1 year. How do i get this result for past three years from wolfram alpha.
...
2
votes
0answers
52 views
WolframAlpha robustness
I am experiencing return values of Missing[NotAvailable] from WolframAlpha[], about 10% of the time. For some reason, this seems ...
2
votes
3answers
148 views
Find the average GDP of multiple countries at once
How would I find the average GDP of a list of countries between set years?
I know how to do it for one but I'm not sure about multiple values. I also wish to find the average population size.
An ...
1
vote
1answer
116 views
list of dates for vernal equinox
I'm trying to get a list of dates and times of the vernal equinox for the last 30 years (or some other time interval). I'm flailing about and really have gotten nowhere. When I've tried typing ...
0
votes
5answers
177 views
Find optimal integer solution to linear equation (Wolfram Alpha)
I'm sorry if this is potentially off topic, but I posted this question at the Math SE and they pointed me here. Both SE sites have a tag for Wolfram Alpha, but maybe you guys are better equipped to ...
5
votes
1answer
93 views
WolframAlpha function does not return structure diagram for chemicals
Neither one of
WolframAlpha["Caffeine"]
WolframAlpha["Caffeine","FullOutput"]
returns a structure diagram for the molecule. It's consistent since ...
2
votes
1answer
114 views
how to get a relation between two parameters from a single equation
2 (ϕ'[r])^2 - 2 u'[r]/r - (u'[r])^2 - u''[r] == 0
I need to get a relationship between u and ...
3
votes
1answer
182 views
FetchUrl status forbbiden when using Wolfram Alpha query
Strange thing here.
If I try this with Free-form input:
Sqrt[(2^t*Log[2])^2/(1 - 2^(2*t))]
I have no problem... But if I try the same expression in the Wolfram ...
1
vote
1answer
176 views
Interpolating the Treasury yield curve
The following code:
scrapes current U.S. Treasury yield data from the Treasury's website;
plots the available data points (from the 1, 2, 3, 5, 7, 10, 20, and 30 year instruments); and
interpolates &...
2
votes
0answers
50 views
Timeout in implicit Wolfram|Alpha calls, but WolframAlpha works
In general we expect this to work:
Quantity["Speed of light"]
Quantity[1, "SpeedOfLight"]
And it does because it can make use of Wolfram|Alpha.
Oddly, though, ...
1
vote
3answers
215 views
Different solutions for $\sin (2x)-\cos (2x)= 1$ and $\sin(2x) = 1 + \cos(2x)$ [closed]
I am trying to solve an equation in Wolfram Mathematica and I get different results although the equation is technically the same. I am really confused. so basically:
$\sin(2x) - \cos(2x)= 1$ is the ...
1
vote
0answers
495 views
Step by step solution of a differential equation - Call Wolfram|Alpha in Mathematica
I know that it's possible to get the step by step solution of a differential equation calling Wolfram in Mathematica. For example:
...
0
votes
1answer
295 views
Resolve, Solve, Refine, etc., do not work, but Wolfram|Alpha does
As a teacher, I am trying to show some step-by-step execution. (Any help with tools would be most appreciated.)
Related, I cannot get the following to work:
...
0
votes
0answers
57 views
WolframAlpha fails to return ComputableData
Why does
WolframAlpha["How much rain in Boston on Dec 25, 2016", {{"Input", 1},
"ComputableData"}]
return Missing["NotAvailable"], when
WolframAlpha["How much rain in Boston on Dec 25, ...
2
votes
1answer
325 views
Improper Integration Step by Step
I am trying to obtain the step-by-step analysis of the integral $\int _{ 0 }^{ \infty }{ { y }^{ 3 }{ e }^{ -\frac { y }{ N } }dy }$ by calling Wolfram Alpha:
...
2
votes
1answer
237 views
Finding all integer solutions of the following inequality $\bigg| \sqrt[3]{2}-\frac{p}{q} \bigg | <\frac{1}{q^{5/2}}$
I want to find integer solutions of the following inequality by using Mathematica
$$\bigg| \sqrt[3]{2}-\frac{p}{q} \bigg | <\frac{1}{q^{5/2}}$$
...
0
votes
1answer
274 views
Mathematica in my computer vs Wolfram Alpha [closed]
I observe that if I execute in the url of wolfram alpha the integral of the function (3/x^2)Sin(x)Sin(x/3) with the limits between zero and infinity:
integrate (3/x^2)sin(x)sin(x/3) from 0 to inf
I ...
0
votes
1answer
119 views
Can Wolfram Development platform use wolfram alpha?
I would like to be able to acces/show the step by step solutions from wolfram alpha in a note book! Is this possible? An
11
votes
0answers
162 views
How can I disable system updates only?
Suppose I'm quite happy with my current Mathematica installation and wish to keep the system in its current form just reliably working.
Since there were already at least two cases[1,2] when a lot of ...
2
votes
0answers
76 views
Low resolution of Math formulas in Wolfram Web Resources [closed]
I use Wolfram Web Resources extensively, but unfortunately, all of the displayed math is in low resolution. Is there a way of viewing (and copying) math in high resolution?
For example: http://...
12
votes
2answers
4k views
I use WolframAlpha within Mathematica; would there be any advantage to buy Wolfram|Alpha PRO?
Our mathematics department provides us with the student edition of Mathematica $10.3.1.0$ and I often use the WolframAlpha["query"] command to use Wolfram|Alpha ...
2
votes
1answer
201 views
Some Wolfram|Alpha Features I can't achieve in Mathematica
I have noticed some features available on the site Wolfram|Alpha which I am not managing to replicate. Two examples which come to mind are the following.
Given a function $f(x)$, I want to determine ...
4
votes
3answers
242 views
Error with Wolfram Alpha
I tried evaluating the following limit with WA, but I got a wrong answer. The limit is: $$\lim_{n\to\infty}\left|
\frac{n\sin^2(n+1)}{(n+1)\sin^2(n)}\right|$$
The result that I obtained from WA was $0$...
