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OpenStudy (anonymous):
1+3x+9x^2+27x^3+.. For what values of the variable does the series converge to this sum?
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OpenStudy (gorv):
it is an infinite Geomatric progression
OpenStudy (gorv):
1+1*3x+3x*3x+3x*9x+.... with common ratio 3x
OpenStudy (gorv):
so for it to converge common ratio <1 3x<1 divide both side by 3
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