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OpenStudy (mathisfun13):
find the value of a1 for this geometric series
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OpenStudy (mathisfun13):
OpenStudy (jhannybean):
Geometric Series\[\large \sum_{n=1}^{\infty}a_{1}r^{n-1}\]
OpenStudy (jhannybean):
Now match up \[\large \sum_{n=1}^{5}\frac29(3)^{n-1}\] to the formula of a geometric series i just posted,you will find your a1.
OpenStudy (mathisfun13):
okay. isnt it 2/9 tho?
OpenStudy (jhannybean):
mmhmm:) Good job.
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