Math Is Fun Forum

jacks

Member

Registered: 2012-11-21

Posts: 132

Geometric progression

If

are in Geometric Progression. Then prove that

Bob

Administrator

Registered: 2010-06-20

Posts: 10,143

Re: Geometric progression

hi jacks

put b = ar and c = ar^2 and substitute in these expressions.

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

jacks

Member

Registered: 2012-11-21

Posts: 132

Re: Geometric progression

Thanks bobbundy I will try it

cool_jessica

Member

Registered: 2012-06-26

Posts: 15

Re: Geometric progression

put b= an, c= an^2

1/a^3+1/an+1/an^2... similarly...

Finally it would come as 1/a=3/4

scientia

Member

Registered: 2009-11-13

Posts: 224

Re: Geometric progression

Something is wrong here. 1, 1, 1 are in geometric progression (r = 1) but

Last edited by scientia (2012-12-22 11:36:29)