1. 1
2. 2
3. 3
4. 4
1
1. 1/e2
2. 2/3e2
3. 8/3e2
4. 4/3e2
4/3e<sup>2</sup>
1. 9x2 - 5y2 = 45
2. 5x2 - 9y2 = 45
3. 9x2 + 5y2 = 45
4. 5x2 - 9y2 = 45
9x<sup>2</sup> + 5y<sup>2</sup> = 45<br>
1. 12
2. 10
3. 6
4. 4
6
1. (1,4)
2. (4,1)
3. (-1,-4)
4. (-4,-1)
(-1,-4)
1. (2 , √2)
2. (√2 ,2)
3. (2,2)
4. ( √2, √2)
(2 , √2)
1. {-2 , -10}
2. {-2 , 10}
3. {-10, 2}
4. {2 , 10}
{-10, 2}
1. a/b
2. √(a/b)
3. √(b/a)
4. b/a
√(a/b)
1. 4 : 3
2. 2 : 3
3. 3 : 5
4. 3 : 4
2 : 3
1. 2
2. 3
3. 4
4. 5
5