迭代法求方程的近似解

解: x7 =  0.090525

MatLab编程:

函数式(dd.m):

function y = dd( x )
 y
=(2-exp(x))/10;
 画图和方法(ddf.m):
 
x=0:0.000001:0.3;
plot(x,dd(x),'k')
grid
plot(x
,x,'g')
hold on
eps
=0.000001;
x0=0;
x1=dd(x0);
while(abs(x0-x1)>eps)
    x0
=x1;
    x1=dd(x1);
    plot(x0,x1,'r*')
end
text(x0
,x1,num2str(x0))

 

 

 

 

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