参赛须知:*解答请独立完成,不抄题目只写题号及解答.*写清学校班级及联系方式,有辅导教师的请注明.*来信在信封左下角注上“高二数学能力月月赛(40)”.*截止日期为4月30日,来信以邮戳为准,答案请写在信封背面.*2009年第6期刊登获奖名单.*对获奖者编辑部将颁发证书并有精美礼品赠送,希望同学们积极参与. Entries: * Please complete the answer alone, do not copy the title only write the title and answer. * Clear school classes and contact information, a tutor please indicate. * Letter in the lower left corner of the envelope marked * Deadline is April 30, the letter is subject to postmark, please write down the back of the envelope. * The winners will be announced in Issue 6, 2009. * The winner's editorial department will issue a certificate There are exquisite gifts, I hope students participate actively.