Differentiation of fractional and negative powers

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Discussion Overview

The discussion revolves around the differentiation of expressions involving fractional and negative powers of variables, specifically focusing on the equation (1+x)/4th root of x. Participants explore methods for differentiating such expressions, considering both the structure of the equation and the application of differentiation rules.

Discussion Character

  • Technical explanation, Mathematical reasoning, Homework-related

Main Points Raised

  • One participant presents a specific equation, (1+x)/4th root of x, and seeks guidance on how to differentiate it.
  • Another participant interprets the equation as (x^{1/4})' and suggests applying the power rule for differentiation.
  • A participant clarifies the expression as (1+x) divided by (x^{1/4}) and questions how to express this as a negative function of x for differentiation.
  • One participant proposes rewriting the expression as x^{-\frac{1}{4}}(1+x) and differentiating it as a product.
  • Another participant suggests an alternative approach by simplifying the expression to x^{-\frac{1}{4}} + x^{\frac{3}{4}} before differentiation.

Areas of Agreement / Disagreement

Participants present different methods for approaching the differentiation problem, indicating a lack of consensus on the best approach. Multiple competing views remain regarding how to handle the expression for differentiation.

Contextual Notes

Participants express uncertainty about the correct manipulation of the expression involving both a constant and a variable in the numerator, as well as the implications of rewriting the expression in different forms for differentiation.

Who May Find This Useful

This discussion may be useful for students or individuals seeking to understand the differentiation of functions involving fractional and negative powers, particularly in the context of algebraic manipulation and application of differentiation rules.

bob4000
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hello reader

i have a problem understanding the following type of equation.

(n+x)/nth root of x

n being a fixed numerical value and x being the unknown

how would i differentiate such a problem

an example of this is:

(1+x)/4th root x
thank you
 
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U mean this

[tex](x^{\frac{1}{4}})'=...?[/tex]

If so,apply the rule for differentiating any power of "x"...

Daniel.
 
the question reads 1+x/4th root of x

therefore to simplify this:

(1+x) divided by (x^1/4)

how do i get this fraction into a negative function of x

if this was 1 divided by 4th root of x i know that this is then 1/x^1/4
which is x^-1/4

however, when there is a '+x' involved, i get stuck. what do you do with the 1+x to differentiate
 
Aaa,that's something else.

[tex][\frac{1+x}{x^{\frac{1}{4}}}]'=[x^{-\frac{1}{4}}(1+x)]'[/tex]

Now differentiate like a product...

Daniel.
 
Or,and I think simpler, write [itex]x^{-\frac{1}{4}}(1+x)= x^{-\frac{1}{4}}+ x^{\frac{3}{4}}[/itex] and differentiate that.
 

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