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#1 2012-12-18 15:19:02

jacks
Member
Registered: 2012-11-21
Posts: 80

Geometric progression

If

are in Geometric Progression. Then prove that

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#2 2012-12-18 19:50:56

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,469

Re: Geometric progression

hi jacks

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

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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#3 2012-12-19 05:22:46

jacks
Member
Registered: 2012-11-21
Posts: 80

Re: Geometric progression

Thanks bobbundy I will try it

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#4 2012-12-19 21:33:27

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

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#5 2012-12-22 11:27:09

scientia
Member
Registered: 2009-11-13
Posts: 222

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)

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