Mathematics Stack Exchange
Mathematics Stack Exchange

Questions tagged [wolfram-alpha]

For mathematical questions related to the usage of WolframAlpha.

WolframAlpha is an answer-engine developed by Wolfram Research that answers factual queries by directly computing the answer from structural data. Note that questions on how to use Mathematica should be asked on Mathematica Stack Exchange.

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Solving system of equations for trig problem in Wolfram Alpha

I'm new to Wolfram Alpha. I'm trying to learn how to do solving using a basic trig system of equations but I don't understand the ouput. The problem is stated in graphic below, I want to solve for t in degrees. I've tried this input in Alpha, in…
David
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HessianMatrix (norm[2](x)) in Wolfram

I'm very new to Wolfram-alpha. I'm trying to compute the Hessian Matrix of ||x|| where x is a vector. I tried this command HessianMatrix (norm[2][x]) in mathematica 13 where I use Wolframalpha input cell but nothing happens. Any idea ? I'm…
Tomer
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WolframAlpha Incorrect Result When Multiplying An Inverse By Another Matrix

According to Wolfram Alpha, $\begin{bmatrix}3 & 1 \\ 5 & 2\end{bmatrix}^{-1}\begin{bmatrix}1 & 0 \\ 0 & 1\end{bmatrix}\neq \begin{bmatrix}3 & 1 \\ 5 & 2\end{bmatrix}^{-1}$. Links to the two computations: MatrixPower[{{3, 1}, {5, 2}}, -1] {{1, 0},…
CompileYourCake
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Input expression with summations in Wolfram Alpha

Wolfram understand this expression , but i need to do the limit when n tends to infinity of that expression . As you can see in the wolfram web itself, in the last link it fails to understand the query. How can i do that?
Wyvern666
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Large system of equations using wolfram alpha.

I'm trying to use Wolfram Alpha to solve a very large system of equations- Variables A through P with a Z. It has 40 equations, so it won't let me use the regular type in the first bar. I tried using the data input method, but then I got confused.…
jakemwp
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How to solve this system of equations in Wolfram Alpha?

I want to solve P0 + t0 * V0 + t2 * V2 == P1 + t1 * V1 for t0, t1 and t2, which are scalars, whereas the uppercase variables are three-dimensional constants. I tried solve[{P_0_0 + t_0 * V_0_0 + t_2 * V_2_0 == P_1_0 + t_1 * V_1_0, P_0_1 + t_0 *…
matthias_buehlmann
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Can someone explain me what the limes of this example is? What does this solution of Wolfram mean?

This is the example I tried to solve with WolframAlpha. The result is also in the picture. Can someone explain me what the limes of this example is and how can i get there by…
OttoFran
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Is it possible to use imaginary guesses with secant method?

I was playing with Wolfram Alpha today, and noticed that while I could use, say, $2i$ as a guess to solve $e^x+2=0$ with the help of Newton's method, I couldn't do the same with the secant method. Is it possible to use two imaginary guesses with the…
PepperLegs
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Specify parameters Wolfram Alpha

Hopefully, this kind of question is ok, have seen a couple of other WA-queries that hasn't been downvoted. Apologies if not. I want to minimize say $f(x)=ax^2+bx+c$. Wolfram Alpha gives me an answer for different intervals of $a$ which makes…
Shiv Tavker
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Iterative Equations in Wolfram Alpha

I am trying to solve an iterated equation, but it is quite messy and I am having trouble. Here are my equations: $$ \mu_{t+1} = \frac{h_t \mu_t + h_\epsilon Z_t}{h_t + h_\epsilon} $$ and $$h_{t+1} = \frac{(h_t + h_\epsilon) h_\delta}{(h_t +…
Ilan Wolff
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Using wolfram alpha to solve IVP

How can wolfram alpha be used to find the solution to an IVP, if the IVP has non integers in the condition For example, The half in the function was changed to multiply outside(it does this for any noninteger) But as shown above works for any…
jamie
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Apply constraint to equation, Wolfram Alpha.

I think it's being able to handle gracefully this one: a * -2 + b * 5 = -9 Yields me several interpretations, one of them I like: a = 5n + 2, b = 2n - 1, n ∊ ℤ Now because a and b are Stack Exchange downvotes and upvotes on questions; and if I fed…
85579
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How to compute for a sequence for a given value in wolfram?

What would be the correct input in the wolfram website to give u(n) for a given n, where u is a sequence ? Something like: evaluate [u(n+1)=27*u(n)-14, u(0) = 1] at n = 3
MFX
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Is there some technique to plot complex functions by hand?

Is there some technique to plot complex functions by hand? Particularly, consider e.g. $$x=\exp(t)\cos(t), y=\exp(t)\sin(t)$$ This is equivalent to $e^x(\cos(y)+i\sin(y))$ along line $y=x$, just parametrized. WA…
mavavilj
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How does one plot $z=(-2)^{3/5}$?

How does one plot $z=(-2)^{3/5}$? I see in Wolfram Alpha: https://www.wolframalpha.com/input/?i=z%5E5%3D-8 But I don't understand how that plot is created.
mavavilj
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