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HSC 2012-14 MX2 Integration Marathon (archive) (1 Viewer)

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RealiseNothing

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Re: MX2 Integration Marathon

My question anyway:



Just put in a random function, sorry if it's too easy or impossible etc.
 

Carrotsticks

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Re: MX2 Integration Marathon

Wait I actually didn't read it properly. Give me a few moments.
 

RealiseNothing

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Re: MX2 Integration Marathon

lol yer I wasn't exactly sure if you could do that, hence my first post with a question mark.
 

Carrotsticks

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Re: MX2 Integration Marathon

You integrated 1/cos(x) with respect to U, then did U/cos(x).

You can't do this because U is dependent on X. You can only do this if it is independent.
 

Shadowdude

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Re: MX2 Integration Marathon

it's wrong because wolfram alpha says it's wrong

trollface.jpg
 
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Re: MX2 Integration Marathon



Hm.
 
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Sy123

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Re: MX2 Integration Marathon



Why doesn't wolfram have a solution with simpler functions? (Mebs I'm wrong)
Differentiating your answer leads to a result which isnt the integral (and subbing in 1 radian to both the differential of your answer, and the function that you integrated has different results)
 
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Re: MX2 Integration Marathon

Hmm where is the algebraic flaw?
 
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Re: MX2 Integration Marathon

I don't think it is integratable?? (Idk)
 

Shadowdude

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Re: MX2 Integration Marathon

ohh that integral

yeah, i dont even know how to solve that (yet)


it's in the next section of my complex analysis course

will get back to you in about three weeks after i covered the material necessary
 
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