1. (π+2)/2
2. (π+2)/4
3. (π+1)/2
4. (π+2)/3
(π+2)/2
1. 1
2. 2
3. 3
4. 4
1 <br>
1. 1-y2=cx
2. 1+y2=cx
3. 1-x2=cy
4. 1+x2=cy
1+y<sup>2</sup>=cx
1. log x3
2. 3x
3. 3-x
4. 31/x
3<sup>x</sup>
1. (0,5)
2. (1,4)
3. (1,3)
4. (2,3)
(1,4)
1. 9C5
2. 6C3 x 3C2
3. 6C3
4. 3C2
<sup>6</sup>C<sub>3</sub> x <sup>3</sup>C<sub>2</sub>
1. 2√2
2. 4√2
3. 8
4. √7
4√2
1. 0
2. 2abc
3. a2+b2+c2
4. abc
abc
1. 15C9 2537
2. -15C9 21035
3. 15C9 215
4. 15C9 2936
<sup>15</sup>C<sub>9</sub> 2<sup>9</sup>3<sup>6</sup>
1. 2n
2. n.2n
3. n.2n+1
4. n.2n-1
n.2<sup>n-1</sup>