Anyway, there's nothing wrong in someone asking for hints to solve textbook problems. A Textbooks category may be useful here. As long as only the author, title, edition, chapter, and problem # are mentioned, some interested person (like me) may choose to answer.
And let me state that I do not now have, or propose to obtain in the future, access to textbook solution manuals. I solve problems by myself so that I can 'sound my barbaric yawp over the rooftops' [Whitman].
M.G.Rajan
www.eecalc.com