%fzero_example.m
%求解一元非線性方程
f = @(x) 1./((x+4).^2+1)+1./((x-4).^2+1)-0.5;         %用匿名函數(shù)來(lái)表示函數(shù)
fplot(f,[-10 10]);                                    %畫(huà)出函數(shù)的圖
xlabel('x');
ylabel('f(x)');
x1 = fzero(f,-5)                                      %求某個(gè)點(diǎn)附近的零點(diǎn)
x2 = fzero(f,-3)
x3 = fzero(f,3)
x4 = fzero(f,5)
x1_region = fzero(f,[-10,-3])                         %求某個(gè)區(qū)間內(nèi)的零點(diǎn)
x2_region = fzero(f,[-3,0])
x3_region = fzero(f,[0 3])
x4_region = fzero(f,[3 10])