Show function satisfies classical waveequation

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SUMMARY

The discussion centers on demonstrating that the function \( y = e^{(x - vt)^{7/8}} \) satisfies the classical wave equation \( \frac{\partial^2 y}{\partial t^2} = v^2 \frac{\partial^2 y}{\partial x^2} \). Participants clarify that the correct approach involves computing the second partial derivatives of \( y \) with respect to time \( t \) and position \( x \). A participant highlights a misunderstanding regarding the derivatives, emphasizing the need to correctly apply the chain rule in differentiation.

PREREQUISITES
  • Understanding of classical wave equations
  • Familiarity with partial derivatives
  • Knowledge of the chain rule in calculus
  • Basic proficiency in mathematical notation and functions
NEXT STEPS
  • Study the derivation of the classical wave equation in detail
  • Practice calculating second partial derivatives of functions
  • Explore applications of the wave equation in physics
  • Learn about the implications of different boundary conditions on wave solutions
USEFUL FOR

Students studying physics or mathematics, particularly those focusing on wave mechanics and differential equations.

leonne
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Homework Statement


show that y=ex-vt)7/8


Homework Equations


d2y/dt2= d2y/dx2



The Attempt at a Solution


i don't understand how they solve this. in the book they have dy/dt=ezdz/dt=-7/8vez(x-vt)-1/8
I thought it would be -7/8veex-vt)7/8 not sure what they did any.
thanks
 
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Your wave equation is wrong, it should be: \frac{\partial^2 y}{\partial t^2} = v^2 \frac{\partial^2 y}{\partial x^2}

Just plug in the function y and take bunch of partials.
 
o ok thxs
 

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