In my previous posts people had problems understanding my question so this time I will keep it simple and objective.How do you integrate these:

- cos(5x)
- cos(5x
^{2})- cos(5x
^{2}+2x^{3})- cos(5x
^{2.5})- cos(e
^{2}^{x})- cos(ln[2x])
- cos(ln[x
^{2}] )

And please also tell me if there is a general method to solve all of these.