MHB Equilibrium solution limit to differential equation

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SUMMARY

The discussion focuses on solving the differential equation dx/dt = x^3 - 4x, identifying equilibrium solutions at x = -2, 0, and 2, with x = 0 being the only stable solution. The participants highlight that the equation is separable and can be solved using Partial Fractions or as a Bernoulli equation. The limit of x(t) as t approaches infinity is determined based on the stability of the equilibrium solutions.

PREREQUISITES
  • Understanding of differential equations, specifically separable equations
  • Knowledge of equilibrium solutions and stability analysis
  • Familiarity with Partial Fractions decomposition
  • Basic concepts of Bernoulli equations
NEXT STEPS
  • Study the method of solving separable differential equations
  • Learn about stability analysis of equilibrium solutions
  • Explore Partial Fractions in the context of differential equations
  • Investigate Bernoulli equations and their applications
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Mathematics students, educators, and anyone interested in solving and analyzing differential equations.

Vishak95
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Can someone please help me with this one? I have found the equilibrium solutions,but I'm not sure what to do next.

Consider dx/dt = x^3 - 4x

Given a solution x(t) which satisfies the condition x(0) = 1, determine the limit(t -> infinity) of x(t).

Thanks!
 
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Well what did you get for your solution?
 
Prove It said:
Well what did you get for your solution?

I got the equilibrium solutions x = -2 , 2 and 0. Out out these only x = 0 is stable. Not sure where to go from here though...
 
I meant, what did you get for your solution to the DE? Hint: It's separable and can be solved using Partial Fractions.
 
Prove It said:
I meant, what did you get for your solution to the DE? Hint: It's separable and can be solved using Partial Fractions.

It's also Bernoulli, as an alternative.
 
Ok, thanks guys, I got the answer :)
 

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