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limiting sum question (1 Viewer)

M

martin310015

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Find the limiting sum of 1-1/3+1/9-1/27+.........

this is what i did.

a=1
r=1/3

s=1/(1-1/3)
=3/2

but the answer is 3/4
 
F

flyin'

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The ratio r = - 1/3. Put that into the formula and it works. :)
 
Huy

Huy

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I could have told you that, T2/T1 = T3/T2

Just a sign mix up, :)
 
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