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DaJollyRoger
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PostPosted: Tue Sep 14, 2010 8:56 pm    Post subject: Help with Homework! 0_0 Reply with quote

How do u do quadratic nth terms? Beginning geometry and forgot notes Shocked
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trineroks
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PostPosted: Tue Sep 14, 2010 9:05 pm    Post subject: Reply with quote

You mean like graphing it?
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Mithoz
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PostPosted: Tue Sep 14, 2010 9:25 pm    Post subject: Re: Help with Homework! 0_0 Reply with quote

DaJollyRoger wrote:
How do u do quadratic nth terms? Beginning geometry and forgot notes Shocked



What do u mean? Are you looking for a equation/formulae?

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LawrenceA
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PostPosted: Tue Sep 14, 2010 9:39 pm    Post subject: Reply with quote

He's talking in terms of creating an equation from a pattern. He said something like -1,0,2 ect
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trineroks
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PostPosted: Tue Sep 14, 2010 10:18 pm    Post subject: Reply with quote

well, if you have the list -1, 0, 2, the equation would be:

2^(n-1) - 2

plug in 1, 2, 3 in the equation

2^(1-1) - 2 = 1 - 2 = -1
2^(2-1) - 2 = 2 - 2 = 0
2^(3-1) - 2 = 4 - 2 = 2

basically you're just finding an equation in which you can plug in the index for variable n (for example, -1 was the first value, so -1 is 1, 0 was the second value, so 0 is 2) and the result would come out to be the answers.

In this equation I modeled, if you plug in 1 for n, you get -1 (this is true since the first number is -1) if you plug in 2 for n, you get 0 (this is true since 0 is the second number) and if you plug in 3 for n, you get 2 (this is also true since 2 is the third number)

hope that helped

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delta1
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PostPosted: Sat Sep 18, 2010 4:43 am    Post subject: Reply with quote

u peoples are smarty pants! Very Happy Very Happy Very Happy Very Happy Very Happy
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galm
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PostPosted: Sat Sep 18, 2010 1:14 pm    Post subject: Reply with quote

Or just older, do u still need help cause I know it too, but trine got it right.
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DaJollyRoger
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PostPosted: Sat Sep 18, 2010 4:10 pm    Post subject: Reply with quote

I got it
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