Question

matlab 编程问题 对函数句柄求积分 在线等！！

f=@(x) ((x-0.1428)/(0.2539-0.1428)).*(x>=0.1428&x<=0.2539)+((0.3490-x)/(0.3490-0.2539)).*(x>0.2539&x<=0.3490);
syms x
x=solve(int(f,0,x)==int(f,x,0.3490),'x' );

我想求使函数f 从负无穷到x 和从x到正无穷定积分相等的点x，显示int不能对函数句柄使用

Answer 1

clear;clc
f=@(x)((x-0.1428)./(0.2539-0.1428)).*(x>=0.1428&x<=0.2539)+((0.3490-x)./(0.3490-0.2539)).*(x>0.2539&x<=0.3490);
g=@(x)integral(f,0,x)-integral(f,x,0.3490);
x=fzero(g,0.2)

x =

0.2498