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I am trying to put in row reduced echelon form the following matrix $ $ \left( \begin{array}{ccc} -0.1 & 0.1 & 2 \ 0.3 & 0.2 & 0 \ 0 & 0.5 & 6.7 \ \end{array} \right) $ $ I did the calculations by hand, and being a fairly simple matrix to reduce, I wantedRead more

I need to perform the factor as shown here https://www.wolframalpha.com/input/?i=factor(s%5E5%2B32s%5E4%2B363s%5E3%2B2092s%5E2%2B5052s%2B4320) I copy the code for the irreduciable factorization N[Factor[s^5 + 32 s^4 + 363 s^3 + 2092 s^2 + 5052 s + 4320, Extension -> Flatten[s /. Solve[s^5 + 32 s^4 + 363 s^3 + 2092 s^2 + 5052 s + 4320 == 0, s]]]]Read more

I’m experimenting with data from the Wolfram data repository. I picked US Fatal Injuries 1999-2014 as an example. I looked at the example on the website: https://datarepository.wolframcloud.com/resources/dzviovich%3AUS-Fatal-Injuries-1999-2014 Rather that just imitate it, I wanted to pull some data from it. The data is all in Time Series. I tried to follow the documentation in MathematicaRead more

This is basically Analogue of NotebookDirectory[] for scripts (to get the directory path of my script.m)? or Write a mathematica script that returns the absolute path to its directory or How to set the relative directory so that they work both in script and in notebook and portable?, except that none of the answers givenRead more

Could you help me please? MathID: 6202-73820-61960Read more

May I get any link for the crack version of Wolfram Mathematica (Linex version) for student purpose. Thanking you.Read more

Sometimes, to find the inverse of a matrix is a labor-consuming task or even “disgusting”, especially when the matrix is “ill”. It is said, e.g. in Julia, that the left/right division operation is more stable than the bare inv. So, does there exist the similar functionality in Mathematica? Of very close relation, at least thereRead more

I am using the Wolfram Cloud app on Android and have received an email with a notebook attached. Using the Wolfram Cloud app I would like to load the notebook to work in it. I can save the notebook to the device. However, there only appears to be a create new option and no uploadRead more

I tried to use Wolfram alpha to solve the following differential equation and produce a general solution without success. I’m not sure why all it gives me is the Lagrangian. What’s wrong with Wolfram alpha? I’m also unfamiliar with how to solve this equation using Mathematica. Initial condition at 0 is 0 and initial conditionRead more

I know that it’s possible to get the step by step solution of a differential equation calling Wolfram in Mathematica. For example: WolframAlpha[“L*x’+R*x=Sqrt[(sin(t))^2] and x(0)=0”, PodStates -> {“Step-by-step solution”}] I tried to do the same thing with another differential equation, but it does not work: WolframAlpha[“Qa Ca'(x)=ka Ca(x) and Ca(0)=Ca0”, PodStates -> {“Step-by-step solution”}] HowRead more