Proving Identity for Generalized Sum S(x)

In summary, "Proving Identity for Generalized Sum S(x)" refers to the process of verifying the validity of a mathematical identity that involves a generalized sum. This is important because it allows us to ensure the accuracy and logical soundness of mathematical equations and helps us understand underlying principles and concepts. Common techniques used to prove identity for generalized sum S(x) include algebraic properties and mathematical induction. It can be proven for all values of x, but may be more challenging for certain values. In mathematics, identity for generalized sum S(x) plays a crucial role in understanding relationships between expressions and solving complex problems.
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kreil
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Homework Statement


In order to solve the problem I am working on, I have to prove the following generalized problem,

[tex]S(x)=\sum_{n=0}^{\infty} n x^n =\frac{x}{(x-1)^2}[/tex] for |x|< 1

I evaluated this sum using Wolfram Alpha. Clearly it looks related to the geometric series solution, but I am unsure how to prove this identity. Any ideas to get me started?
 
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  • #2
Differentiation of the geometric series
 
  • #3
Of course, I see it now. Thanks!
 

FAQ: Proving Identity for Generalized Sum S(x)

What is "Proving Identity for Generalized Sum S(x)"?

"Proving Identity for Generalized Sum S(x)" refers to the process of verifying the validity of a mathematical identity that involves a generalized sum, or sum of terms with varying values. This is often done through algebraic manipulation and logical reasoning.

Why is it important to prove identity for generalized sum S(x)?

Proving identity for generalized sum S(x) is important because it allows us to verify the accuracy of mathematical equations and ensure that they are logically sound. It also helps us to understand the underlying principles and concepts involved in the equation.

What are some common techniques used to prove identity for generalized sum S(x)?

Some common techniques used to prove identity for generalized sum S(x) include using algebraic properties, such as the distributive property and the associative property, and using mathematical induction to prove the identity for all values of x.

Can identity for generalized sum S(x) be proven for all values of x?

Yes, identity for generalized sum S(x) can be proven for all values of x as long as the equation is logically sound and the necessary mathematical techniques are applied correctly. However, it may be more challenging to prove for certain values of x compared to others.

What is the role of identity for generalized sum S(x) in mathematics?

Identity for generalized sum S(x) is an important concept in mathematics as it helps us to understand the relationships between different mathematical expressions and to solve complex problems. It also serves as a basis for more advanced mathematical concepts and theories.

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