midpointc.m

sareli<matlab科学计算>配套程序

function Imp=midpointc(a,b,M,f)
%MIDPOINTC Composite midpoint numerical integration.
%   IMP = MIDPOINTC(A,B,M,FUN) computes an approximation of the integral 
%   of the function FUN via the midpoint method (with M equispaced intervals).
%   FUN accepts real scalar input x and returns a real scalar
%   value. FUN can also be an inline object.
H=(b-a)/M; 
x = linspace(a+H/2,b-H/2,M);
fmp=feval(f,x); 
Imp=H*sum(fmp);
return