Newton's method using MATLAB

please write the newton metohd function as a code in MATLAB to evaluate the below functions. Files for functions and their dertive are alreay obtained so I only need The newton function. The code i wrote is giving me Error: Character vector is not terminated properly.

not sure why

Function files and their derivtive:

f1.m

function y = f1(x)

% y = x^2-9

y = (x^2)-9;

end

----

df1.m

function [yprime]=df1(x)

% [yprime]=df1(x) computes the derivative of y=x^2-9

yprime=2*x;

end

----

f2.m

function y = f2(x)

y = x^5-x-1;

end

----

df2.m

function [yprime]=df2(x)

% [yprime]=df2(x) computes the derivative of y= x^5- x-1

yprime=5*x^4 - 1;

end

----

f3.m

function y = f3(x)

y = 3*x-exp(-x);

end

----

df3.m

function [yprime]=df3(x)

% [yprime]=df1(x) computes the derivative of y = 3*x-exp(-x)

yprime = 3 + exp(-x);

end

----

f4.m

function y = f4(x)

y = 2*cos(3*x)-exp(x);

end

-----

df4.m

function[yprime]=df4(x)

%% [yprime]=df4(x) computes the derivative of y= 2*cos(3*x)-exp(x)

yprime = - 6*sin(3*x) - exp(x);

end

2-(j) Fill in the following table