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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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#1 2012-12-19 14:19:02

jacks
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Geometric progression

If

are in Geometric Progression. Then prove that

#2 2012-12-19 18:50:56

bob bundy
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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

#3 2012-12-20 04:22:46

jacks
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Re: Geometric progression

Thanks bobbundy I will try it

#4 2012-12-20 20:33:27

cool_jessica
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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

#5 2012-12-23 10:27:09

scientia
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Re: Geometric progression

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

Last edited by scientia (2012-12-23 10:36:29)

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