Solución al ejercicio
5515
a)
b)
![\bf y(x,t) = 2A\ cos[\frac{\pi}{\lambda}(x_2 - x_1)]\cdot cos(40\pi t - 4\pi x)](local/cache-TeX/ea3e0e636b3211789d553c3f7cef3e19.png "\bf y(x,t) = 2A\ cos[\frac{\pi}{\lambda}(x_2 - x_1)]\cdot cos(40\pi t - 4\pi x)")
b) 