1
2
3
4
5
6 (-∞,8)
7 x=e^4-1
8 x=-2+ln(0.2)
9 y=log[2/3](x)
10 y=-ln(-2x)
11 4/5
12 6log(a)-3log(b)-(1/2)log(c)
13 log[3](13)
14 x=-0.1616
15 129.66 s
16 R
17
18 5cos(pi/2)+5isin(pi/2)
19 8cos(pi/3)-8isin(pi/3)
20 8sqrt(2)cos(pi/4)...
21 24(cos(pi/2)+isin(pi/2))
22 -64
23 sqrt(2)(cos(pi/8)+isin(pi/8)),
     sqrt(2)(cos(9pi/8)+...
24 2(cos(pi/18)...
25 <-2,-4>
26 |u+v|=2sqrt(34)
27 v=2.1i+-2.1j
28 |v|=4
29 F4=-11i-2j
30 u=9i, v=6j
31 -43/sqrt(13)
32 (8,3),(0,-1)
33 x=-5/(b+a), y=-5/(b+a)
34 117 mi/h, 27 mi/h
35 x=3, y=2, z=1
36 inconsistent
37 ???
38 3X+A=B
39 [2 18]...
40 [10 -58]
41 [-5 -3 2][x]...
42 [8 3]...
43 [1/2e^x 1/2e^2x]
44 7
45 D=1,764
46 A/x + B/x^2 …
47 A/(x-7) + B/(x-7)^2 + C/(x+7)
48 A/x...
49 6/(x-3) – 6/(x+3)
50 2/(x+3) + 7/(x-5)