forward difference

I need help in getting started on how to create a function that calculates the derivative of f(x)=a*x+b*x.^2+c*x.^3+d*sin(m*x)+g*exp(h*x) given that a,b,c,d,m,g,and h are constants and are known on the interval (0,2*pi) using forward difference method. I am new to matlab so I don't know how to even get started with this. if anyone could help me and give me some tips on how to start this please.!!!

Answer 1

[Jan]

Read the "Getting Started" chapters of the documentation. If you search for a specific topic, these commands help:

lookfor difference
docsearch difference

Answer 2

[Sean de Wolski]

 doc diff