Consider the infinite geometric series.infinityΣ -4(1/3)^x-1
a. Write the first four terms of the series.
b. Does the series diverge or converge?
c. If the series has a sum, find the sum.

Question

Consider the infinite geometric series.infinityΣ -4(1/3)^x-1
a.	Write the first four terms of the series.
b.	Does the series diverge or converge?
c.	If the series has a sum, find the sum.

anonymous · Answer

$$\sum_{x=1}^{\infty} -4 \frac{ 1 }{ 3 }^{x-1}$$

luigi0210 · Answer

You can do part A can't yall?

anonymous · Answer

No I haven't done any of this stuff until this test im taking >.<

anonymous · Answer

Can you help or is this one that's too hard?

luigi0210 · Answer

Whoops, sorry, got distracted.. but for a, just plug in values 1, 2, 3, and 4.

anonymous · Answer

Where do I plug them in?

luigi0210 · Answer

Into x..

anonymous · Answer

The one by 1/3

luigi0210 · Answer

Well yea, that's the only equation there

anonymous · Answer

so it would 1/3^1-1 1/3^2-1 1/3^3-1 1/3^^4-1