代写thesis proposal：公司治理作为企业绩效的价值
1 Background of research1研究背景 随着公司的出现和发展，公司治理也随之出现，成为专家学者关注的焦点。英国作为第一个国家兴起公司之一，公司治理体系
2019-10-25
代写MTH1030 assignments
代写MTH1030 assignments
MTH1030: Assignment 3, 2016
Ramanujan
The Rules of the Game
... are the same as those for the rst two assignments. This assignment is worth a total of
100 marks.
1 Convergence at the speed of light [50 Marks, each
subquestion is worth 10 marks]
The Indian mathematician Srinivasa Ramanujan1 discovered the formula
1
=
X1
n=0
p
8(4n)!(1103 + 26390n)
9801(n!)43964n :
Note that the series starts with n = 0. This means that in the following it makes sense to
talk about the 0th term and the 0th partial sum of this series.
This series converges at an amazing speed and was used in 1985 to compute the rst
17,526,100 digits of , which was the world record at the time.
To prove this identity is quite tricky, so let's do some things with it that are within our
reach.
a) Use the 0th term of Ramanujan's series to approximate . How many correct digits do
you get (counting the 3 at the start as the rst digit)? Do the same using the 0th and the
1st term of the series.2
1This is mathematician that the recent movie \The man who knew in nity" is all about.
2To coax Mathematica into displaying the rst 40 digits of some number after the decimal point use the
command N[number, 40]. For example, to display 40 digits of use N[Pi, 40].
1
b) Using the ratio test, verify that the series is convergent.
c) Let an denote the nth term of this series, starting with 0th term a0. It turns out that
an+1 < Lan
for n 1, where L is the limit that you calculated under b). Show that this implies that
an < Ln
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