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Random math problem.

 
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keybounce
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Joined: 07 Mar 2009
Posts: 224

PostPosted: Sat Apr 24, 2010 8:08 pm    Post subject: Random math problem. Reply with quote

So what is the integral from 0 to 6 of x^2-5 dx?

Working from dusty old math, that's 1/3rd x^3 - 5/2x^2, at the edges.

For 0, that's 0.
For 6, that's 1/3 * 36 * 6 - 5/2 * 36

That simplifies to 36 * 2 - 5 * 18

Or 72 - 90

Or -18

How can the answer be -18? It's been too long; what am I doing wrong on the integral?
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Rick
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Joined: 22 Apr 2009
Posts: 40

PostPosted: Sat Apr 24, 2010 8:14 pm    Post subject: Reply with quote

Or instead of trying to do the math you could just brush up on your Hitchhiker's Guide! Wink
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Mad Merlin
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Joined: 14 Aug 2005
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PostPosted: Sat Apr 24, 2010 8:21 pm    Post subject: Reply with quote

What's the derivative of 5/2x^2? (Hint: It isn't 5.)
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keybounce
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Joined: 07 Mar 2009
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PostPosted: Sat Apr 24, 2010 10:22 pm    Post subject: Reply with quote

Well, duuh, if I get a term wrong ...
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keybounce
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Joined: 07 Mar 2009
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PostPosted: Sat Apr 24, 2010 10:44 pm    Post subject: Reply with quote

"Ohh, a floating rock"

He said for no particular reason
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Terrific Noise
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Joined: 02 Jun 2009
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PostPosted: Sat May 01, 2010 2:23 am    Post subject: Reply with quote

If there were more random higher math questions in Game!, I wouldn't have been bored away by now.
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indros
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Joined: 06 May 2010
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PostPosted: Wed May 19, 2010 10:17 am    Post subject: Check out Wolfram Alpha Reply with quote

This web program solves a lot of math problems: http://tinyurl.com/3xyocze
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