显示所得零点初始猜测值，结果为： tt = -0.9838 0.0001 yy = 1.8762 0.0091 （5）用函数fzero命令求函数的精确零点[x,fval,exitflag]=fzero(’fun1’,tt(1),[]) %靠近tt(1)点处的精确零点[x,fval,exitflag]=fzero(’fun1’,yy(1),[]) %靠近yy(1)点处的精确零点结果为： Zero found near tt. x = -1 fval = 0 exitflag = 1第3章矩阵、数组和符号运算Zero found near yy. x = 1.8812 fval = -6.2172e-015 exitflag = 1