Solving a diff eq by substituion

  • Thread starter Thread starter shemer77
  • Start date Start date
  • Tags Tags
    Diff eq
Click For Summary
SUMMARY

The discussion centers on solving the differential equation x*y²(dy/dx) = y³ - x³. The proposed solution is (x³/3) + c = y/x. To verify the solution, participants recommend solving for y, taking the derivative, and substituting back into the original equation to check for equality. This method ensures the correctness of the solution and confirms its validity against the given differential equation.

PREREQUISITES
  • Understanding of differential equations
  • Knowledge of implicit differentiation
  • Familiarity with algebraic manipulation
  • Basic calculus concepts
NEXT STEPS
  • Study techniques for solving first-order differential equations
  • Learn about implicit differentiation and its applications
  • Explore methods for verifying solutions to differential equations
  • Investigate the use of substitution in solving complex equations
USEFUL FOR

Students studying calculus, particularly those focusing on differential equations, as well as educators looking for methods to teach solution verification techniques.

shemer77
Messages
96
Reaction score
0

Homework Statement


x*y2(dy/dx)=y3-x3
solve the problem

Homework Equations





The Attempt at a Solution


My answer was (x3/3)+c=y/x
there is no answer in the back of the book for this one so i just want to make sure i got it right
 
Physics news on Phys.org
shemer77 said:

Homework Statement


x*y2(dy/dx)=y3-x3
solve the problem

Homework Equations



The Attempt at a Solution


My answer was (x3/3)+c=y/x
there is no answer in the back of the book for this one so i just want to make sure i got it right
Solve your result for y. Then, take the derivative & plug it into the given equation. See if you get equality.
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 4 ·
Replies
4
Views
1K
  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 4 ·
Replies
4
Views
1K