I have an expression like:
$ expr= \frac{1}{2}(A x^2y^2+ Bx^2Log[y]Cos[2\phi+\alpha] +C \frac{y^3}{x}Sin[\phi +\beta+\gamma]+DxCos[\phi]) $
I have two problems as follows:
1.I want to extract those terms which contain $ 2\phi$ and $ \phi$ . i.e , I require output as:
$ \phi term=\frac{1}{2}(C \frac{y^3}{x}Sin[\phi +\beta+\gamma]+DxCos[\phi])$
$ 2\phi term=\frac{1}{2}(Bx^2Log[y]Cos[2\phi+\alpha]) $
$ restterms=\frac{1}{2}(A x^2y^2)$
2.I would like to have the coefficient of the functions containing $ 2\phi$ and $ \phi$ .
$ $ \phi coeff=\frac{1}{2}(C \frac{y^3}{x}+Dx)$ $ $ $ 2\phi coeff=\frac{1}{2}(Bx^2Log[y]) $ $ I request solutions on how to do this.