[中學] 一元二次方程式
解一元二次方程式時
用公式解會出現 (-b+-√b^2-4ac)2a
通常都是 √ 前出有+-
那什麼時候會出現根號前沒有加減 而是常數項前出現加減
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 111.251.164.188
推
12/29 21:06, , 1F
12/29 21:06, 1F
→
12/29 21:07, , 2F
12/29 21:07, 2F
推
12/29 21:11, , 3F
12/29 21:11, 3F
→
12/29 21:24, , 4F
12/29 21:24, 4F
推
12/29 21:35, , 5F
12/29 21:35, 5F
→
12/29 21:36, , 6F
12/29 21:36, 6F
→
12/29 21:37, , 7F
12/29 21:37, 7F
→
12/29 21:38, , 8F
12/29 21:38, 8F
→
12/29 21:39, , 9F
12/29 21:39, 9F
推
12/29 21:45, , 10F
12/29 21:45, 10F
→
12/29 21:46, , 11F
12/29 21:46, 11F
→
12/29 21:48, , 12F
12/29 21:48, 12F
推
12/30 10:18, , 13F
12/30 10:18, 13F
→
12/30 15:37, , 14F
12/30 15:37, 14F
→
12/30 15:38, , 15F
12/30 15:38, 15F
討論串 (同標題文章)