Question

Someone please explain geometric Series please I will fan and metal

Answer 1

fitst u know diffrent between series and sequence ? @SnowCrystal

Answer 2

first*

Answer 3

i mean relation between them

Answer 4

a1=a1
a2=a1*r
a3=a2*r=a1*r²
.
.
an=an-1*r=a1*r^n-1

Answer 5

no i dont

Answer 6

series its sum of sequence and u know geometric sequence look likes

Answer 7

nope

Answer 8

so in a geometric series we always multply the previsiously number for a ratio called r here

Answer 9

let a1= 2 and r=2

a1=2
a2=2*3
a3=2*3² and so on

Answer 10

2,6,18...

Answer 11

oh okay that makes sense

Answer 12

if we add the three terms 2+6+18=26

Answer 13

S3=2*(3^3-1)/2=27-1=26 as we proved before

Answer 14

a1*(r^n-1)/(r-1)

Answer 15

got it ?