How to do partial differentiation of a function?

The function is given as:

E1=ln((1+x1)/(1-x1));

How to do patial differentiation of E1 with respect to x1?

Answer 1

[Star Strider]

This requires the Symbolic Math Toolbox:

syms x1 
E1 = log((1+x1)/(1-x1))

E1 = 

dE1dx1 = diff(E1,x1)

dE1dx1 = 

dE1dx1 = simplify(dE1dx1, 500)

dE1dx1 = 

.