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forum.virtualchallengemeets.com • View topic - I don't get this

I don't get this

What could be so hard. It's a multiple-choice test for Pete's sake.

I don't get this

Postby 101dalmatians » Sun Jan 20, 2013 3:39 pm

[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...
I guess this signature really doesn't matter now that I know that the forum is going down soon...
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Re: I don't get this

Postby darksaber21 » Sun Jan 20, 2013 4:26 pm

[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.
Now I know the stakes, and I'm willing to show what I gots. I will see you all at state for the first and final time, so let's end the year with a bang! :)
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