Shooting Method: issues with zero

I am struggling with Problem 24.16 (see attatched). This is the code I have been using, but I keep getting the following error:

 Error using fzero (line 306)
    FZERO cannot continue because user-suppliedfunction_handle ==> hw7_24p16res failed with theerror below.
        Undefined function 'hw7_24p16dydxn' for input arguments of type 'double'.
    Error in hw7_24p16 (line 55)
        [x,y]=ode45(@hw7_24p16dydxn,tspan,[5 fzero(@hw7_24p16res,L)]);

Here is my code:

clear all
close all
 
E=200*10^9;%in Pa
I=30000*10^(-8);%m^4
w=15*10^3;%N/m
L=3;%m
 
x=[0 L];
y=[0 0];
 
fprintf('(b) the shooting method\n')
fprintf('\n')
tspan=x;
[x,y]=ode45(@hw7_24p16dydxn,tspan,[5 fzero(@hw7_24p16res,L)]);
plot(x,y(:,1))

Functions:

function [dy]=hw7_24p16ydxn(x,y)
E=200*10^9;%in Pa
I=30000*10^(-8);%m^4
w=15*10^3;%N/m
L=3;%m
 
%x=[0 L];
%y=[0 0];
 
dy=[y(2);
    (w*L*x-w*x^2)/(2*E*I)];
end

function [r]=hw7_24p16res(za)
[x,y]=ode45(@hw7_24p16dydxn,[0 L],[0 za]);
r=y(end,1)-0;

HELP!

[darova]

It means that function with this name doesn't exist

Undefined function 'hw7_24p16dydxn' for input arguments of type 'double'.

Look

function [dy]=hw7_24p16ydxn(x,y)

Answer 1

[Jyotsna Talluri]

You have defined a function with function name hw7_24p16ydxn and you are calling a function 'hw7_24p16dydxn' which does not exist