Create a script file that calls a userdefined function withi
     Create a script file that calls a user-defined function within a for/end loop to symbolically compute the derivative of the natural log of x, or In(x), on the interval from -5 to 5, containing 100 data points. The output of the script file should be a line with symbols, a grid and appropriate labels. The user-defined function should  Receive the particular x value in the loop.  Symbolically take the derivative of the mathematical function log(x).  Substitute the particular x value into the derivative.  Return the computed derivative back to the script file to be stored in a vector. 
  
  Solution
// save the below code as DerivativeOfLog.m
clc
 clear all
 close all
 function f=DerivativeOfLog(x)
 syms x
 G=log10(x);
 f=diff(G);
 end
// run the below code after saving of above
for x=-5 : 0.1 : 5
f(x)=DerivativeOfLog(x);
end

