Answer to Question #86239 in Field Theory for Ajay
Obtain the value of the constant c for which the function u(x,t) = cosαcxsinαt is a
solution of the wave equation :
d^2u/dt^2=c^2(d^2u/dx^2)
1
2019-03-15T12:38:10-0400
d2u/dt2=−α2cosαcxsinαt
d2u/dx2=−α2c2cosαcxsinαt Thus,
−α2=c2(−α2c2)⟹c4=1 c=+1 or c=-1
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