% Problem von Seite 136

clear all

fh = @fcn136 ;       % "function handle"

fplot (fh , [0 2*pi])
grid on

beta1 = fzero (fh , [0 1]) * 180 / pi 
beta2 = fzero (fh , 3)     * 180 / pi
beta3 = fzero (fh , [4 5]) * 180 / pi
beta4 = fzero (fh , [5 6]) * 180 / pi

