作者thirddawn (三色黎明)
看板b94902xxx
标题微甲题目
时间Sat Sep 24 21:31:03 2005
2.2
6.给你一张图问你各极限的值(sorry我无法)
27.determine the infinite limit
x-1
lim -----------
x->-2+ x^2(x+2) (x趋近於-2正)
32a.Find the vertical asymptotes(垂直渐进线...应该是啦) of the function
x
y = ---------
x^2-x-2
2.3
10.(a) What is wrong with the following equation?
x^2+x-6
-------------- = x+3
x-2
(b)In view of part(a), explain why the equation
x^2+x-6
lim --------- = lim (x+3)
x->2 x-2 x->2
is correct
49.(a)If the symbol [[ ]] denotes the greatest integer function defined in
Example 10, evaluate
(i)lim [[x]] (ii) lim [[x]] (iii) lim [[x]]
x->-2+ x->-2 x->-2.4
(b) If n is an integer, evaluate
(i) lim [[x]] (ii) lim [[x]]
x->n- x->n+
(c)For what values of a does lim [[x]] exist?
x->a
54. If r is a rational function, use Exercise 53 to show that lim r(x)=r(a)
x->a
for every number a in the domain of r.
2.5
40.Find the constant c that makes g continuous on (-无限,无限) (不会打...)
x^2-c^2 if x<4
g(x)=
cx+20 if x>=4
52(a).Prove that the equation has at least one real root
1
(x-5)^1/2 =-----------
(x-5的开根号) x+3
大概就这样...大家加油...
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1F：推 wkilont:感激不尽 09/24 21:35
2F：推 alex1025:感谢... 09/24 21:45
3F：推 luyota:THX...:) 09/24 22:01
4F：推 gomibako:感激 糟糕...还有一个普物没课本＠＠ 09/24 23:19
5F：推 thirddawn:能力外了...抱歉 09/24 23:24
6F：推 Sinze:感恩 09/25 01:29
7F：推 astralbeams:好人 09/25 07:46
8F：推 phymach:推阿 太感谢你了 你是好人... 回答是要用中文or英文? 09/25 19:50