1. (-∞, 2) U (3, ∞)
2. (2, 3)
3. R
4. φ
φ
1. e
2. e2
3. e3
4. -e
e2
1. (1, 4)
2. [1, 4)
3. (1, 4]
4. [1,4]
[1, 4)
1. [4, 6]
2. (-∞, 6)
3. (2, 3)
4. none
[4, 6]
1. [-1, 2]
2. (-1, 2)
3. [-1, 1] U (1, 2)
4. R
[-1, 1] U (1, 2)
1. 0
2. 1
3. e
4. 1/e
1/e
1. (a+b+c)2/a2+b2+c2
2. a2+b2+c2/(a+b+c)2
3. s
4. Δ
(a+b+c)2/a2+b2+c2
1. -1
2. 0
3. 1
4. e
e
1. e
2. e2
3. e3
4. –e
e3
1. 1
2. 0
3. s
4. 2Δ
0