發表文章發起投票 廢柴唔識calculus, 求救點樣可以d/dx sin(2x²) by definition, 又without using L'Hospital rule點解條題目要恰尻我;-(302016/11/03, 9:45:53 晚上本貼文共有 0 個回覆此貼文已鎖，將不接受回覆發表文章發起投票
3
03030