function as arguement in matlab

Hi evyryone, can anybody please explain how should i do this question, i have no idea what it means: write a function that takes as an arguement another function name or handle and a value of a of x and returns the derivative evaluated at x = a

thanks, i really appreciate your help

[Stephen23]

Read about feval.

Answer 1

[KSSV]

function c = test(fun,a,b) 
c = fun(a,b)

Call

a = rand ;
b = rand ;
c = test(@tan2d,a,b)