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h. For ω = ω , plot the variation of the transmission coefficient as
0
function of θ .
i
i. Repeat (h), but now investigate the variation in the transmission
coefficient as a function of L.

5.4 MATLAB Commands Review
besselj The built-in BesselJ function.
fmin Finds the minimum value of a single variable function or
a restricted domain.
fmins Finds the local minimum of a multivariable function.
fsolve Finds a root to a system of nonlinear equations assuming
an initial guess.
fzero Finds the zero of a single variable function assuming an
initial guess.
roots Finds the roots of a polynomial if the polynomial coeffi-
cients are given.
poly Assembles a polynomial from its roots.
zoom Zooms in and out on a 2-D plot.

© 2001 by CRC Press LLC