All Questions
Tagged with wolfram-alpha-queries equation-solving
14 questions
4
votes
1
answer
447
views
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 ...
- 3,464
0
votes
0
answers
35
views
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
1
vote
4
answers
183
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/...
- 2,385
0
votes
1
answer
77
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
1
answer
39
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|...
- 13
5
votes
4
answers
3k
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 ...
- 153
1
vote
3
answers
343
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 ...
- 13
0
votes
1
answer
679
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:
...
- 1,225
2
votes
1
answer
440
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
$$\bigg| \sqrt[3]{2}-\frac{p}{q} \bigg | <\frac{1}{q^{5/2}}$$
...
- 9,076
20
votes
1
answer
2k
views
Can Mathematica solve functional equations with nested variable?
First, inline free form input can solve these equations:
But it seems no native Mathematica function can solve these, there is even an error page for equations of this form (nestdv).
Now my ...
- 7,911
-1
votes
1
answer
2k
views
What am I doing wrong when using Solve ( Wolfram Alpha)
It is not because we do not interpreted correctly
WolframAlpha["Solve[64(!(*FractionBox[(x - *SqrtBox[(*SuperscriptBox[(x), \
(2)] - 1)]), (x + 1)]) !(*SuperscriptBox[()), \
(2)])-25(1-!(*FractionBox[...
- 309
1
vote
2
answers
335
views
Significantly different results between Mathematica and Wolfram Alpha with large radicals and small numbers [closed]
I have some code which involves tiny numbers being put to the power of very large numbers. The function I'm looking at is
$\varphi = \omega(T) \left(1 - (1 - \epsilon)^{n_{e}(T)} \right)$
when $\...
- 877
0
votes
1
answer
846
views
Why does this work with Wolfram|Alpha but not Mathematica? [closed]
I ran into this while doing some work today:
It's the exact same syntax - and I expected that Mathematica would be more likely to be able to solve it, since oftentimes Wolfram|Alpha doesn't have all ...
- 325
2
votes
1
answer
390
views
Mathematica unable to solve equation numerically while Wolfram|Alpha can
I want to solve the following equation
2 x == Sinh[x]
Mathematica is unable to do so
...
- 131