This is the archive site of the Mathematics Crystal Google+ Community created by Jacky Ko. If you want to ask mathematics questions and contribute your solutions, please go to the Mathematics Crystal Community. Questions and answers posted in the community must be copyright free and are considered to be in the public domain. The materials can be redistributed with or without modifications. Selective materials may be archived here and made available for non-Google+ users. While this community is set up with HSC (High School Certificate NSW Australia) students in mind, it is open to the world.
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