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Mathematics 21 Online
OpenStudy (itz_sid):

Help Please!

OpenStudy (itz_sid):

I am confused as to how I do these problems for #14.

OpenStudy (schoolcool):

you don't need help your a human calculator

OpenStudy (schoolcool):

lol

OpenStudy (itz_sid):

@zepdrix @mathmate

zepdrix (zepdrix):

I don't understand how this series could converge \(\large\rm \sum\limits_{n=0}^{\infty}c(-4)^n\). It can't, right? I mean I guess they mean for c_n to be more than just a constant right? I'm a little confused, hmm.

Hayhayz (hayhayz):

x=1 for a

OpenStudy (itz_sid):

Yea I am completely lost....

OpenStudy (caozeyuan):

so I cant figure out the radius of convergence for this sequnce

Hayhayz (hayhayz):

i told u hello...

OpenStudy (itz_sid):

@Hayhayz Would it be x=1. Because the original series converges, so we know this series converges?

OpenStudy (itz_sid):

for the first one.

Hayhayz (hayhayz):

because cn*1^n = cn

OpenStudy (itz_sid):

Yay it was right! :D

OpenStudy (itz_sid):

for b) Would x=9 and Diverge since the original diverges?

OpenStudy (itz_sid):

@Hayhayz

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