Solving the Wave Equation with D=A sin kx cos \omegat

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SUMMARY

The function D=A sin(kx) cos(ωt) is analyzed to determine if it satisfies the linear wave equation. To verify this, one must compute the second partial derivatives of D with respect to x and t. The relationship between wave velocity and wave number is defined as v = ω/k. If the function adheres to the linear wave equation, it will exhibit the fundamental characteristics of linear waves.

PREREQUISITES
  • Understanding of linear wave equations
  • Knowledge of partial derivatives
  • Familiarity with trigonometric functions in wave mechanics
  • Concept of wave velocity (v = ω/k)
NEXT STEPS
  • Learn how to compute second partial derivatives in multivariable calculus
  • Study the characteristics of linear waves in physics
  • Explore the derivation and applications of the wave equation
  • Investigate the relationship between angular frequency and wave number
USEFUL FOR

Students studying physics, particularly those focusing on wave mechanics, as well as educators and tutors assisting with wave equation problems.

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1. Homework Statement [/b

Determine whether the function D=A sin kx cos \omegat
is a solution of the wave equation.

Homework Equations



D=Asin (kx-\omegat)

The Attempt at a Solution



sorry completely lost please help
 
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This is the (linear) wave equation:
http://hyperphysics.phy-astr.gsu.edu/HBASE/Waves/waveq.html
The one you're focusing on is the top one.

You'll have to find the second partial derivative of D with respect to x and of D with respect to t. The velocity is given by v = w/k. To check whether the given wave is a solution to the wave equation, you just have to plug things in and see if it works out. The linear wave equation is a general property of linear waves. I forgot what the key characteristics of linear waves were, but if the wave does follow this wave equation, then it holds these characteristics.
 

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