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[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 379: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
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forum.virtualchallengemeets.com • View topic - I don't get this

Page 1 of 1

I don't get this

Posted: Sun Jan 20, 2013 3:39 pm

by 101dalmatians

[unparseable or potentially dangerous latex formula]

I got [unparseable or potentially dangerous latex formula]

Ans. Key says [unparseable or potentially dangerous latex formula]

I don't get my ans. simplified to what is given in the key...

Re: I don't get this

Posted: Sun Jan 20, 2013 4:26 pm

by darksaber21

[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]

If you did it the other way (using u-substitution or the ti-89 directly)

[unparseable or potentially dangerous latex formula]

Using u-substitution:
[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]

OR:

[unparseable or potentially dangerous latex formula]

Using u-substitution:
[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]

-----
The expressions will differ at most by a constant, so all three expressions are technically correct answers.