...converge to L, then lim x(n+1)= lim (xn+ 2/xn)/2 ( n -> inf is omitted ) L= (L + 2/L)/2 , so L=√2 (b) x1=c+1, x(n+1...
"Direct debit of $1000 to ABC company" 只是一筆在事先允許下 由你的(公司的)帳戶支付出去的款項吧? 它與你的 "透支(overdraft)" 應是兩回事. 2012-12-10 09:40:10 補充： "overdraft interest of $100" 是因透支而產生的利息費用. 這 $100 的利息對應的透支金額並不一定是...
...in the following we use *_bar for closure of *. {the proof is routine, omitted .} 2012-03-22 16:18:37 補充： (**)If U, V are open ...
...obtain the other part of the inequality, C|x|_1≦|x|_2, for all x in V, so omit it and leave you as an exercise. Hence |*|_1 is equivalent to...
...;0.5, then 0.75|x| < | ln(1+x) | < 2|x|. pf. omit .(by Calculus) Σ|A(n)| abs. conv. then lim(n->inf...
...2n+1)] => r = lim(n -> ∞) |a(n)/a(n+1)| = lim(n -> ∞) |(2n+3)/(2n+2)| ( omit the calculation) = 1 => |x| < 1, the series Σa(n)x^n...
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