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Gnesinka [82]
2 years ago
8

Given the infinite series:

5%29%7D%2B%5Cfrac%7B1%7D%7B%285%29%287%29%7D%2B..." id="TexFormula1" title="\frac{1}{(1)(3)} +\frac{1}{(3)(5)}+\frac{1}{(5)(7)}+..." alt="\frac{1}{(1)(3)} +\frac{1}{(3)(5)}+\frac{1}{(5)(7)}+..." align="absmiddle" class="latex-formula">
a. Rewrite the series in sigma notation
b. Write an explicit formula for the nth partial sum
Mathematics
1 answer:
chubhunter [2.5K]2 years ago
8 0

a) The infinite series in <em>sigma</em> notation is described by this expression:

y = \sum \limits_{i=1}^{\infty} \frac{1}{i\cdot (i+2)}     (1)

b) The <em>explicit</em> formula for the n-th <em>partial</em> sum is represented by the following expression:

y = \frac{1}{i\cdot (i+2)}, i ∈ \mathbb{N}     (2)

<h3>How to derive an expression for a monotonous series</h3>

An infinite series is <em>monotonous</em> when it is <em>bounded</em>, that is, when the limit of the <em>infinite</em> series exists. In this case, we have an evidence of monotony in the denominators of the terms of the given series. In two consecutive terms, the latter always have a denominator greater than the former.

a) The series in <em>sigma</em> notation is now described below:

y = \sum \limits_{i=1}^{\infty} \frac{1}{i\cdot (i+2)}

b) The <em>explicit</em> formula for the n-th <em>partial</em> sum is defined by the expression within the sum, which is now presented below:

y = \frac{1}{i\cdot (i+2)}, i ∈ \mathbb{N}  

To learn more on infinite series: brainly.com/question/4268280

#SPJ1

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4 0
3 years ago
Can 2 Yards And 60 Inches Be Expressed as a ratio. If Yes, Express In Simplest Form .
Simora [160]

Answer:

no

Step-by-step explanation:

u needn't

6 0
2 years ago
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Find a closed-form solution to the integral equation y(x) = 3 + Z x e dt ty(t) , x &gt; 0. In other words, express y(x) as a fun
MrMuchimi

Answer:

y{x} = \sqrt{7+2Inx}

Step-by-step explanation:

y(x)= 3 + \int\limits^x_e {dx}/ \, ty(t) , x>0}

Let say; By y(x)= y(e)  

we have;  

y(e)= 3 + \int\limits^e_e {dt}/ \, ty= 3+0

Using Fundamental Theorem of Calculus and differentiating by Lebiniz Rule:

y^{1} (x) = 0 + 1/ xy

y^{1} = 1/xy  

dy/dx = 1/xy  

\int\limits {y} \, dxy = \int\limits \, dx/x

y^{2}/2 Inx + C

RECALL: y(e) = 3  

(3)^{2} / 2 = In (e) + C  

\frac{9}{2} =In(e)+C  

\frac{9}{2} - 1 = C

\frac{7}{2} = C  

y^{2} / 2 = In x +C

y^{2} / 2 = In x +7/2

MULTIPLYING BOTH SIDE BY 2 , TO ELIMINATE THE DENOMINATOR, WE HAVE;

y^{2} = {7+2Inx}  

y{x} = \sqrt{7+2Inx}

8 0
3 years ago
7x+3+6x+11 i need help solving this problem
____ [38]
Step-by-step solution:

7x + 3 + 6x + 11 = 0

7x + 6x + 11 + 3 = 0

13x + 11 + 3 = 0

13x + 14 = 0

13x = 0 - 14

13x = -14

x = -14 / 13

x = -1.077 approx.




Hope it helped,



BioTeacher101
8 0
2 years ago
What type of triangle is formed by joining the points D(7, 3), E(8, 1), and
KiRa [710]

D(7, 3), E(8, 1), and  F(4, -1)

We calculate the squared distances between the points:

DE^2 = 1^2 + 2^2 = 5

EF^2=4^2+2^2=20

DF^2=3^2+4^2=25

Since DF^2=DE^2+EF^2 we have a right triangle with hypotenuse DF.

7 0
3 years ago
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