How could I rewrite a symbolic equation to obtain coefficients?

Hi,

I have this equation :

Z=cos(2*P)*((cos(2*A)/2 - cos(2*S)/2)*(cos(2*C)^2 + sin(2*C)^2*cos(Dc)) - (sin(2*A)*sin(2*S)*cos(D)*(cos(2*C)... with many other mathematical terms!

I would write this equation as

Z=A+B*cos(2*C)+C*sin(2*C)+D*cos(4*C)+E*sin(4*C)

My ultimate aim is to collect the coefficients A, B, C, D and E.

Thank you for any help!

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/symbolic/collect.html

http://www.mathworks.com/help/symbolic/formula-rearrangement-and-rewriting.html

You might be able to use coeff() but I have seen hints that the Symbolic Toolbox is not forgiving if the expression is not a true polynomial in the variable.