• Support PF! Buy your school textbooks, materials and every day products via PF Here!

Simple derivative

  • Thread starter nameVoid
  • Start date
D= (x^2+x)^(1/2)

Why does the chain rule in this case produce D' = (1/2)(x^2+x)^(-1/2) (2x+1)(x')

and not D' = (1/2)(x^2+x)^(-1/2) (2x+1)(2x')
 

rock.freak667

Homework Helper
6,230
31
[tex]\frac{dD}{dt}=\frac{dx}{dt} \times \frac{dD}{dx}[/tex]

So like in the other thread, can you understand why now?
 

Related Threads for: Simple derivative

  • Posted
Replies
2
Views
686
  • Posted
Replies
3
Views
2K
  • Posted
Replies
3
Views
935
  • Posted
Replies
6
Views
1K
  • Posted
Replies
4
Views
5K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top