code error for Two Point Boundary Value Problem

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leeee
leeee 2019-11-20
评论： leeee 2019-11-21
Hello, I have no idea what is wrong...any ideas would help, thanks!
function [A,b,x]=task14(n)
%n=149
t1=1;
tn=10;
y1=-4;
yn=-1;
h=(tn-t1)/n;
t=t1:h:tn;
A=zeros(n+1,3);
b=zeros(n+1,1);
for i=2:1:n
t2=t(i);
y(i-1)=(t2+4)/(h^2)-(1-t2^2)/(2*h);
y(i)=-2*(t2+4)/(h^2)+3*cos(2*t2);
y(i+1)=(t2+4)/(h^2)+( 1-t2^2 )/(2*h);
A(:,1)=[y(i-1)];
A(:,2)=[y(i)];
A(:,3)=[y(i+1)];
b(i,1)=2*sin(2*t1)-cos(3*t1)-3*cos(2*t1);
end
x=A\b

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回答（1 个）

KALYAN ACHARJYA
KALYAN ACHARJYA 2019-11-20
I did not find any coding error in your code, just save the task14 function file in the same directory. You can call the saved task14.m file from the main matlab script or command window.
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