Law on Copyright

COPYRIGHT – is bundle of rights that an author enjoys of the form of the expression of the ideas.

CRITERIA FOR COPYRIGHT PROTECTION
1. Originality – answers the question “did you make it?” while novelty in patents answers the question “did you make it first?”
2. Fixation in a tangible medium – what is protected is the tangible expression of the idea, not the concept, idea or format

^So ICE SCULPTURES are covered right?

you are correct. INTELLECTUAL PROPERTY CODE OF THE PHILIPPINES
[Republic Act No. 8293] so provides:

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172.1 Literary and artistic works, hereinafter referred to as "works", are original intellectual creations in the literary and artistic domain protected from the moment of their creation and shall include in particular:

(a) Books, pamphlets, articles and other writings;

(b) Periodicals and newspapers;

(c) Lectures, sermons, addresses, dissertations prepared for oral delivery, whether or not reduced in writing or other material form;

(d) Letters;

(e) Dramatic or dramatico-musical compositions; choreographic works or entertainment in dumb shows;

(f) Musical compositions, with or without words;

(g) Works of drawing, painting, architecture, sculpture, engraving, lithography or other works of art; models or designs for works of art;

(h) Original ornamental designs or models for articles of manufacture, whether or not registrable as an industrial design, and other works of applied art;

(i) Illustrations, maps, plans, sketches, charts and three-dimensional works relative to geography, topography, architecture or science;

(j) Drawings or plastic works of a scientific or technical character;

(k) Photographic works including works produced by a process analogous to photography; lantern slides;

(l) Audiovisual works and cinematographic works and works produced by a process analogous to cinematography or any process for making audio-visual recordings;

(m) Pictorial illustrations and advertisements;

(n) Computer programs; and

(o) Other literary, scholarly, scientific and artistic works.

172.2. Works are protected by the sole fact of their creation, irrespective of their mode or form of expression, as well as of their content, quality and purpose. (Sec. 2, P. D. No. 49a)

^yeah, yun din sabi ko after reading Aquino's book eh. he said hindi daw kasi hindi daw "fixed sa isang medium" meaning hindi permanent.

of course, opinion nya lang yun.

Question:
Example, there is a textbook protected by a copyright, I answer all the questions in the exercises at the end of each chapter. Then I compile all my answer into a book highlighting that this is the answer to all questions in that textbook, then I publish it.
Am I violating a copyright?

Thank you very much!