1. 3/2
2. 3/4t
3. 3/2t
4. 3t/2
3/4t
1. 1 / 9
2. 1 / 12
3. 1 / 6
4. 5 / 36
1 / 12
1. 10√2
2. 1 / 800
3. 4
4. 8
8
1. d2y/dx2 =2xy
2. x(d2y/dx2) = y
3. (xd2y/dx2)+(dy/dx)+y = 0
4. xd2y/dx2 =2xy
x(d2y/dx2) = y
1. 3 / 8
2. 1 / 4
3. 15 / 64
4. 49 / 44
15 / 64
1. –y/x
2. [3sin(xy)-4cos(xy)]/[3sin(xy)-4cos(xy)]
3. [3cos(xy)+4sin(xy)/[3cos(xy)+4sin(xy)]
4. tan(xy)
–y/x
1. 2α
2. α / 3
3. αe-2
4. αe2
α / 3
1. 1 / 2
2. 1 / 4
3. 1 / 6
4. 1 / 3
1 / 3
1. 2n-1
2. 2n/2 sin [(nπ) / 4]
3. 2n/2 cos [(nπ) / 4]
4. 0
2n/2 cos [(nπ) / 4]
1. -2cosα (cos (π + α) + i sin(π + α))
2. 2cosα (cos α + i sin α)
3. 2cosα (cos (-α) + i sin (-α))
4. -2cosα (cos (π - α) + i sin (π - α))
2cosα (cos α + i sin α)