tag:blogger.com,1999:blog-3550204829234352390.post1385097365415197133..comments2024-03-27T09:13:48.546+08:00Comments on 研發養成所 ( Bridan's Blog - 4rdp, For R&D Person ): 訓練數學感 118 ─ 三個根號和等式Bridanhttp://www.blogger.com/profile/17055047757114667099noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-3550204829234352390.post-16631007633450184542016-10-27T20:27:29.069+08:002016-10-27T20:27:29.069+08:00感謝兩位的分析,老師已將模式分三類,可以很容易分辨型態,西瓜將它化為通式,看來這也可以套回之前兩個根...感謝兩位的分析,老師已將模式分三類,可以很容易分辨型態,西瓜將它化為通式,看來這也可以套回之前兩個根號和的式子,此類型題目完全破解。要給兩位 讚!讚!讚!<br />Bridanhttps://www.blogger.com/profile/17055047757114667099noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-15472808399889834022016-10-27T17:26:48.929+08:002016-10-27T17:26:48.929+08:00三正整數k,l,m,n
a=kl^2
b=km^2
c=kn^2
d=k(l+m+n)^2三正整數k,l,m,n<br />a=kl^2<br />b=km^2<br />c=kn^2<br />d=k(l+m+n)^2.https://www.blogger.com/profile/16677804023065232981noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-79280773867917847112016-10-27T11:53:41.100+08:002016-10-27T11:53:41.100+08:00分三種:
第一種,全同:
1,1,1,9
2,2,2,18
3,3,3,27依此類推
第二種,全平方...分三種:<br />第一種,全同:<br />1,1,1,9<br />2,2,2,18<br />3,3,3,27依此類推<br />第二種,全平方:<br />1,1,4,16<br />1,4,4,25<br />1,1,9,25依此類推<br />第三種,第一種中abc與第二種中ABC分別相乘,得到Aa,Bb,Cc:<br />例如:2,2,8,32flyingdustshttps://www.blogger.com/profile/10543166743971149568noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-11046658658287593242016-10-26T21:02:02.520+08:002016-10-26T21:02:02.520+08:00嗯,光看你的列式就知道不好算,大家先猜看看它有沒有整數解?嗯,光看你的列式就知道不好算,大家先猜看看它有沒有整數解?Bridanhttps://www.blogger.com/profile/17055047757114667099noreply@blogger.comtag:blogger.com,1999:blog-3550204829234352390.post-17279050200152119382016-10-26T20:44:36.678+08:002016-10-26T20:44:36.678+08:00這題如果要展開會很可怕。
a^4-4a^3b-4a^3c-4a^3d+6a^2b^2+4a^2bc+...這題如果要展開會很可怕。<br />a^4-4a^3b-4a^3c-4a^3d+6a^2b^2+4a^2bc+4a^2bd+6a^2c^2+4a^2cd+6a^2d^2-4ab^3+4ab^2c+4ab^2d+4abc^2-40abcd+4abd^2-4ac^3+4ac^2d+4acd^2-4ad^3+b^4-4b^3c-4b^3d+6b^2c^2+4b^2cd+6b^2d^2-4bc^3+4bc^2d+4bcd^2-4bd^3+c^4-4c^3d+6c^2d^2-4c d^3+d^4<br />.https://www.blogger.com/profile/16677804023065232981noreply@blogger.com