1. 5.93
2. 9999
3. 4.9P3
4. 5.9P3
5.93
1. 2,3
2. 2,2
3. 3,1
4. 3,2
2,2
1. 7
2. 6
3. 5
4. 4
6
1. 720x111
2. 1800x1111
3. 1800x111
4. 1260x111
1260x111
1. y=(dy/dx)(1-y2)1/2
2. ydy/dx=(1-y2)1/2sin-1x
3. y(1-x2)1/2=sin-1x(dy/dx)
4. y/y1=(1-x2)1/2
y=(dy/dx)(1-y2)1/2
1. 1,2
2. 1,1
3. 2,1
4. 2,2
1,2
1. 30
2. 6
3. 25
4. 36
6
1. 4!(2!)2
2. 4!(3!)22!
3. (4!)23!2!
4. 4!3!2!
4!(3!)22!
1. y1=y2
2. y2+y1=0
3. y1=y
4. y1+y=0
y1=y
1. 2c
2. 2b
3. 2a
4. 0
2c