用牛顿迭代法,求导x=0.29644
>> x0=0;tol=1e-6;x1=newton(x0,tol)
n =
     6
x1 =
      0.29644
>>syms x,ezplot(sin(4*x^2-4*x+1)-(3/4)*x-1/(10*x+3)+9/40),grid on
>>hold on,plot(double(x1),0,'p'),text(0.5,1,'Zeros Point')
代码见附件
图形见下图