Consider the infinite geometric series below.

a. Write the first 4 terms of the series
b. Does the series diverge or converge?
c. If the series has a sum, find the sum.

∑ (-2)^n-1
n=2

1 answer


∑ (-2)^n-1
n=2
= -2 + 4 - 8 + 16 - ...

= (-2+4) + (-8+16) + (-32+64) ....
= 2 + 8 + 32 + ...

so what do you think ?
Similar Questions
  1. Consider the infinite geometric series∑^(∞)_(n=1) −4(1/3)^n−1 . In this image, the lower limit of the summation notation
    1. answers icon 2 answers
  2. Consider the infinite geometric series∑ ∞ n = 1 − 4 ( 1 3 ) n − 1 . In this image, the lower limit of the summation
    1. answers icon 2 answers
  3. Consider the infinite geometric series∑ ∞ n = 1 − 4 ( 1 3 ) n − 1 . In this image, the lower limit of the summation
    1. answers icon 2 answers
  4. Consider the infinite geometric seriesn=1 infinity symbol -4(2/3)^n-1 a. Write the first four terms of the series. b. Does the
    1. answers icon 1 answer
more similar questions