MATLAB: Differentiation of Z, Symbolic toolbox

Question

Hi,

I am trying to differentiate the equation : Z = S*((1-(a*z^-1)^2)^-0.5)

where z is a complex variable : z = x+1i*y

i being the sqrt of -1.

If I use the function

syms z

Zprime = diff(z)

I get the result : 'Undefined function 'syms' for input arguments of type 'char'

Does this mean I need another toolbox for the syms function to work so I can differentiate z?

All I would like to do is differentiate Z with respect to z and use this result elsewhere.

I cannot find a simple way to do this in Matlab.

I may be doing something silly here, please help out.

Cheers,

Tim

Answer 1

Timothy, looks like you do not have access to the Symbolic Math Toolbox. See this answer for reference.