Summation with exponential functions

In summary, summation with exponential functions involves adding a series of numbers raised to exponents, resulting in a non-linear growth or decay pattern. This differs from regular summation, which produces a linear or constant growth pattern. It has real-world applications in finance, biology, and physics, and can be used to predict population growth, radioactive decay, and investment values. To solve a summation with exponential functions, the initial term, common ratio/base, and number of terms must be identified and a formula or calculator can be used. However, the limitations of this method include assuming a constant growth or decay rate and not accounting for sudden changes or fluctuations in the data.
  • #1
Belgium 12
43
0
Dear members,

see attached pdf file.Can you help me to prove this formulas.

Thank you

Belgium 12

This is not homework.I'm 68 and retired.
 

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  • 01-03-2013 18;40;51.PDF
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  • #2
The terms are a composition of [tex]\left(\frac{1}{z}\right)^k[/tex] and [tex]e^z .[/tex] There should be a nice geometric series formula for this.
 
  • #3
Yes. [itex]e^{kz}= (e^z)^k[/itex] and [itex](-1)^{k-1}e^{kz}= -((-1)e^z)^k[/itex].

So use the fact that the geometric series [itex]\sum_{k=0}^\infty ar^k[/itex] is [itex]a/(1- r)[/itex].
 

Related to Summation with exponential functions

1. What is summation with exponential functions?

Summation with exponential functions is a mathematical process that involves adding together a series of numbers, with each value being raised to an exponent. This results in an exponential growth or decay pattern.

2. How is summation with exponential functions different from regular summation?

Regular summation involves adding together a series of numbers without any exponents, resulting in a linear or constant growth pattern. Summation with exponential functions, on the other hand, results in a non-linear growth pattern due to the exponential values.

3. What are some real-world applications of summation with exponential functions?

Summation with exponential functions is commonly used in fields such as finance, biology, and physics to model growth and decay patterns. For example, it can be used to predict population growth, radioactive decay, or the value of investments over time.

4. How do you solve a summation with exponential functions?

To solve a summation with exponential functions, you need to first identify the value of the initial term, the common ratio or base, and the number of terms in the series. Then, you can use a formula or a calculator to calculate the sum of the series.

5. Are there any limitations to using summation with exponential functions?

One limitation of summation with exponential functions is that it assumes a constant growth or decay rate, which may not always be the case in real-world situations. Additionally, it may not accurately model sudden changes or fluctuations in the data being analyzed.

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