Solutions to 4 Math Problems: Derivatives & Integrals

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Homework Help Overview

The discussion revolves around several math problems related to derivatives and integrals. Participants are reviewing and providing feedback on the original poster's attempts at solving these problems.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • The original poster shares multiple problems involving derivatives and integrals, expressing confidence in their answers. Some participants question the algebraic manipulations used in the derivative problem, suggesting a need for correction. Others provide feedback on the integrals, noting potential issues with notation.

Discussion Status

Participants are actively engaging with the original poster's work, offering corrections and affirmations. Some have indicated that the revised derivative appears correct, while others are still discussing the integrals and their representations.

Contextual Notes

There are indications of confusion regarding algebraic steps in the derivative problem, as well as concerns about notation in the integrals. The original poster has acknowledged the need for corrections and is in the process of revising their submissions.

Jacobpm64
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This is a followup post for all the problems i posted yesterday.. please check them all.. i believe i got the correct answers.. Thanks a lot.

1. Find the derivative:
http://img225.imageshack.us/img225/7261/der42complete4fy.gif

2. Find the integral:
http://img195.imageshack.us/img195/1766/int18complete2ua.gif

3. Find the integral:
http://img225.imageshack.us/img225/7525/int20complete0pr.gif

4. Find the integral:
http://img225.imageshack.us/img225/3107/int26complete9ld.gif
 
Last edited by a moderator:
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Jacobpm64 said:
This is a followup post for all the problems i posted yesterday.. please check them all.. i believe i got the correct answers.. Thanks a lot.

1. Find the derivative:
http://img225.imageshack.us/img225/7261/der42complete4fy.gif
Before taking the derivative, the algebra is wrong. You must *divide* by x-2 whereas you multiplied by x-2. (I know that you were probably thinking of (-x-2) divided by (x*(x-1)/(x-2)) but what you have is instead (-x-2)/(x*(x-1)) divided by (x-2)
 
Last edited by a moderator:
Jacobpm64 said:
This is a followup post for all the problems i posted yesterday.. please check them all.. i believe i got the correct answers.. Thanks a lot.


The integrals are right (except that one would never write u^0/0 in the last one!)
 
ah, i forgot the reciprocal.. grr.. give me a few minutes.. i'll correct that and repost..
 
here is a fix on the derivative one.. is this right now?

http://img100.imageshack.us/img100/4594/der42complete1ag.gif
 
Last edited by a moderator:
Looks good.
 
Jacobpm64 said:
here is a fix on the derivative one.. is this right now?

http://img100.imageshack.us/img100/4594/der42complete1ag.gif
[/URL]

Looks right to me
 
Last edited by a moderator:
thanks :biggrin:
 

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