Hi, Truxton,
In your code : you did two different things, making a function in M-file but inside that function , you used also "function_handle", you have two ways :
1) You create a function with its own Input/Output :
function [y]=Truxton(x) % function output=function_name(input)
y=x.^3 + 2*x.^2 - x;
a=-10;
b=10;
TOL=.001
Now in the command prompt , you tape per example :
>>x=5;z=Truxton(x)
>>time=[0:pi/100:10*pi];
>>Z=Truxton(time);
>>plot(time,Truxton)
>>fplot('Truxton',[0 100])
2)Or you can use the function handle directly in the command prompt :
>>f=@(x) x.^3 + 2*x.^2 - x
>>z=f(5);
>>z2=f([0:0.01:10];
I hope that helps
