Question

The total number of fungal spores can be found using an infinite geometric series where a1 = 11 and the common ratio is 2. Find the sum of this infinite series that will be the upper limit of the fungal spores.

Answer 1

@amistre64

Answer 2

geometric infinite sum =a1/(1+r)

Answer 3

yah but idk how to set it up

Answer 4

11/3?

Answer 5

" where a1 = 11 and the common ratio is 2"

so a1 = 11 and r = 2

Answer 6

11/3?

yes!

Answer 7

then what :)

Answer 8

"Find the sum of this infinite series that will be the upper limit of the fungal spores."

the answer is 11/3

Answer 9

these are the options...

465

280

The series is divergent

125

Answer 10

oh wait, sorry! i see what I did wrong

Answer 11

if |r|<1, then
geometric infinite sum =a1/(1+r)
else
the series is divergent

Answer 12

oh ok thank you

Answer 13

^_^