a) x(x-2)<80 and x-2>0 x²-2x-80<0 and x>2 (x-1O)(x+8)<0 and x>2 -8<x<1O and x>2 2<x<1O b) 2<x<1O and x is...
先從語氣分析，(you should省略，形成命令句，有強制意味)Eat as much as you want, but there's to be (在此用to be 不定詞片語，形成句意因果關係...
log_a(ab)．log_b(ab) + log_a(a-b)．log_b(a-b) = 0 = log_a(b)(log_b(ab))^2 + log_a(b)(log_b(a-b))^2 = log_a(b)[(log_b(ab))^2 + (log_b(a-b))^2] iff. log_b(ab) = 0 and log_b(a-b) = 0 (∵ log_a(b) ≠ 0) iff. ab = 1 and a-b = 1 iff. a = b+1 and b^2+b-1 = 0 iff. a = (√5 +1)/2, b = (√5 -1)/2 (∵ b > 0)
log_a(ab) + log_b(ab) + log_a(a-b) + log_b(a-b) = 0 = log_a(ab(a-b))+log_b(ab(a-b)) = (log_a(b)+1)log_b(ab(a-b)) ∴ log_a(b) = -1, or ab(a-b) = 1 log_a(b) = -1 iff. (if and only if) ab = 1. ab(a-b) = 1 iff. a^2 b - ab^2 - 1 = 0 iff. a = b + √(b^4+4b)/(2b) (∵ a > b > 0)
5 | 25 45 75 -------------- 5 | 5 9 15 -------------- 3 | 1 9 3 ------------ 1 3 1 ∴ L.C.M. of 25,45,75 = 5x5x3x3 = 225 So, ferries set off at the same time every 225 min.,that is, 3hr. 45 min. => they set off at the same time again at : 10 a.m.+3hr. 45 min., 10 a.m.+7hr. 30 min...
一分耕耘，一分收穫。 謂下多大功夫，有多大成果。 一寸光陰一寸金，光陰難買寸光陰。 光陰即是時間；謂時間寶貴，不要浪費。 一日為師，終生為父。 謂師父永遠是長輩。 一粒老鼠屎，壞了一鍋粥。 謂數量雖少，為害極大。 一人開井，萬人飲水。 借指為公眾謀福利。 十...
...hope to urging me on .I owed my success in study much to her encouragement.
...description, total surface area means you just need to add all area of the faces, much easy right? So you can don't use any of formula, just work for a long time...
１．cover letter所應該寫的要點是：指出求職者正面的特點適應職缺的需求與對公司的聊解．雖然可以引用求職者謙虛向上的態度，虛無的詞語卻是人云亦云，毫無建樹可言．只有反效果． ２．５年之後，你看出ＸＸ事業沒有前途？到不如說你被ＹＹ事業的...
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