Questions tagged [wolfram-alpha-queries]

Use this for questions about calling Wolfram Alpha from Mathematica. Questions about Wolfram Alpha itself are off-topic.

Filter by
Sorted by
Tagged with
1
vote
0answers
43 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 ...
1
vote
4answers
141 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/...
0
votes
1answer
49 views

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 ...
0
votes
1answer
74 views

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 ...
4
votes
0answers
41 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 ...
4
votes
0answers
83 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 ...
1
vote
1answer
44 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...
3
votes
1answer
136 views

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: ...
2
votes
0answers
84 views

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: ...
1
vote
0answers
68 views

Solutions given by WolframAlpha [closed]

When I try to solve, the following equation over the integers using WolframAlpha: $$x^2(1+x)=y(3y-1)\tag1$$ WolframAlpha gives me the following solutions $(x,y)$: $$(-1,0),(0,0),(1,1),(4,-5),(6,-9)\...
2
votes
1answer
65 views

WolframAlpha does not give stepwise solution for a simple twodimensional integral

Why does the behave this particular way: ...
0
votes
1answer
71 views

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
2answers
89 views

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 ...
3
votes
1answer
107 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 ...
2
votes
2answers
440 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
64 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
74 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
36 views

How to fix this error at numerical integration?

I have this: ...
3
votes
0answers
59 views

Querying WolframAlpha from WolframScript

Is it possible to query WolframAlpha from a wolframscript query? The following yields $Failed: ...
1
vote
1answer
78 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
65 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
37 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
69 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
47 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
265 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
99 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
702 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
122 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
9
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 ...
4
votes
0answers
113 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
110 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
35 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
237 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
118 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
61 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
710 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
291 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+...
5
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
371 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
110 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
59 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
184 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
136 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
323 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
101 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
138 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
242 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
212 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 &...
4
votes
0answers
81 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
255 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 ...