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Mathematics 23 Online
OpenStudy (anonymous):

lk'hjs'avkja'dfs

OpenStudy (math&ing001):

Notice that we multiply each time by (-3).

OpenStudy (anonymous):

my first answer was -1*-3^(n-1) but that didnt work

OpenStudy (math&ing001):

If a1=-1 then the general term would be exactly as you said.

OpenStudy (anonymous):

then what did i do wrong?

OpenStudy (math&ing001):

Who told you it was wrong ?

OpenStudy (anonymous):

my hw is online. you put in an answer and it tells you if you are right or wrong

OpenStudy (math&ing001):

Did you try replacing -1 by a1 like this : \[a _{n}=a _{1}*(-3)^{n-1}\]

OpenStudy (anonymous):

a1 isnt going to be recognized. only some variables are. in this case the only one is n

OpenStudy (math&ing001):

Well it must be just a bug because your answer is correct :)

OpenStudy (anonymous):

ok thanks

hartnn (hartnn):

\((-1)(-3)^{n-1} = - (-3)^n/ (-3) = 1/3 (-3)^n\) try this

hartnn (hartnn):

(1/3) (-3)^n

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