# Thread: Wolfram Alpha Free online Integration Tool (excellent resource)

1. ## Wolfram Alpha Free online Integration Tool (excellent resource)

Hi, Slidey here.

I just wanted to let everybody know about Wolfram Alpha. It's pretty amazing for mathematics purposes. It incorporates Mathematica but entering queries is easier, and it extends beyond maths. I imagine it should be quite useful for HSC Maths.

Here's an example of solving the limit of ln(x)/x as x -> infinity:
http://www94.wolframalpha.com/input/...finity+ln(x)/x

Click 'show steps' to see how Alpha solved it using l'Hospital's rule.

Here's the derivative of ln((sin(x^2)-8ln(2/x)^-1)), including steps and two plots at different scales:
http://www94.wolframalpha.com/input/...-8ln(2/x)^-1))

Perhaps this thread could be stickied? Ideally this thread would be replicated on all the forums (General, 2U, 3U) as Alpha is a perfect aid for figuring out how to do many questions because it offers working (many books don't offer working in answers, and past exams usually don't come with answer). I don't see any mods here anymore, though, which is sad.

2. ## Re: Wolfram Alpha

Very great tool, but solves a lot of integrals using long recurrence formulae when a simple manipulation will suffice. Completely understandable, considering the nature of how they calculate this crap....

3. ## Re: Wolfram Alpha

but can it do circle geo questions

4. ## Re: Wolfram Alpha

Originally Posted by MC Squidge
but can it do circle geo questions
Wolfram Alpha is good for helping with understanding more mechanical types of questions (e.g. integration, graphing, complex numbers, etc), not the problem solving and proof-based ones, almost by its very nature as a computer programme.

5. ## Re: Wolfram Alpha

An excellent resource, therefore stickied and replacing the old "Online integration step by step website + more" thread.

6. ## Re: Wolfram Alpha

Haha, my teacher showed me this website (which I had no idea about until halfway through my course).

I think the 'Maths Online' website: Maths Online - Free Maths Tuition For All Australian High School Students which is provided and sponsored by McDonalds should be sticked as well.

Oh... WolframAlpha also have an iPhone/iPod Touch app which is very handy and cool. I think I will have to invest in an iPod touch not only for this reason.

7. ## Re: Wolfram Alpha

Lmao I was looking for how to integrate $\int \frac{\sin^2x\cos x}{\sin x+\cos x}\ dx$
http://www.wolframalpha.com/input/?i...x+%2B+cosx)+dx

Ended up with like 10 pages working LOL

8. ## Re: Wolfram Alpha

^That is classic.

9. ## Re: Wolfram Alpha Free online integrator (excellent resource)

anyone know how to do solid of revolution on wolfram alpha

10. ## Re: Wolfram Alpha Free online integrator (excellent resource)

Originally Posted by ohlookmonkeys
anyone know how to do solid of revolution on wolfram alpha

Maybe in latex

11. ## Re: Wolfram Alpha Free online integrator (excellent resource)

Originally Posted by hayabusaboston
Maybe in latex
LaTeX is a language for typesetting mathematical terms.

It does not perform any calculations.

12. ## Re: Wolfram Alpha Free online integrator (excellent resource)

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