6 items are filed under this topic.
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A geometric series |
2018-03-13 |
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From nathi:
Hi I am really struggling with this question please help !!!!
a pohutukawa tree is 86 centimetres when it is planted. in the first year after it is planted , the tree grows 42 centimetres in height.Each year the tree grows in height by 95% of the growth of the previous year.
assume that the growth in height of the pohutukawa tree can be modelled by a geometric sequence.
A)find the height of the tree 5 years after it is planted and figure out the maximum height the pohutukawa tree is expected to reach in centimetres.
The maximum height part is not answered.
Answered by Penny Nom. |
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1+2+4+8....= -1 |
2012-04-02 |
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From Andy:
In this minutephysics video, it's claimed that 1+2+4+8....= -1
Is this true, and if so, how?
< href="http://www.youtube.com/watch?v=kIq5CZlg8Rg">http://www.youtube.com/watch?v=kIq5CZlg8Rg
Answered by Robert Dawson. |
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The sum of a series |
2011-11-07 |
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From Rattanjeet:
Find the sum of 1(1/2) + 2(1/4) + 3(1/6) + 4(1/6)(3/4) + 5(1/6)(3/4)2 + 6(1/6)(3/4)3+ ... where 1/6 + (1/6)(3/4) + (1/6)(3/4)2 + ... constitutes a geometric series.
Answered by Penny Nom. |
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Infinite Logarithmic Series |
2011-08-08 |
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From Sourik:
Dear Expert,
In my Amithabha Mitra and Shambhunath Ganguly's "A Text Book of Mathematics" I found the formula of log (1+x) where the base is e and x lies in between -1 and +1.As I want to learn Mathematics,I am not satisfied with the mere statement of the formula.Please help giving me the full proof.
Thanking you,
Sourik
Answered by Robert Dawson. |
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Sigma from 0 to infinity of (n^3 / 3^n) |
2006-11-15 |
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From Cedric:
I'm wondering how you would find if this series converges or diverges?
Sigma from 0 to infinity of (n^3 / 3^n)
Does the n^3 dominate, or does the 3^n dominate? What about higher powers like n^10 / 10 ^ n ? Which one would dominate then?
Answered by Penny Nom. |
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An infinite series |
2000-12-16 |
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From John:
summation(n=1 to infinity)[n sin(1/(2n))]n
Answered by Harley Weston. |
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