Implicit differentiation dy/dx

Click For Summary
SUMMARY

The discussion focuses on finding the derivative dy/dx for the equation xy-2 = 1. The user attempted to differentiate the equation and arrived at dy/dx = (y - y3)/2x. However, the correct answer is y/2x, indicating a misunderstanding in applying implicit differentiation. The user also questioned the differentiation of the constant on the right side, which is zero.

PREREQUISITES
  • Understanding of implicit differentiation
  • Familiarity with basic calculus concepts
  • Knowledge of the power rule for differentiation
  • Ability to manipulate algebraic expressions
NEXT STEPS
  • Review the rules of implicit differentiation in calculus
  • Practice differentiating equations involving products and powers
  • Explore examples of differentiating constants
  • Learn about the applications of derivatives in real-world problems
USEFUL FOR

Students studying calculus, particularly those learning about implicit differentiation and derivative applications.

freetofu
Messages
6
Reaction score
0

Homework Statement


Determine dy/dx
xy^-2 = 1

Homework Equations




The Attempt at a Solution


Here's what I tried:
y^-2 - 2xy^-3(dy/dx) = 1
dy/dx = (y - y^3)/2x

The answer in the book is y/2x. How do you do it?
 
Physics news on Phys.org
You differentiated the left side but not the right side

d/dx(1) = ?
 
Thanks. Duh.
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 15 ·
Replies
15
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 25 ·
Replies
25
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 24 ·
Replies
24
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 32 ·
2
Replies
32
Views
4K
Replies
3
Views
2K
  • · Replies 20 ·
Replies
20
Views
2K