1. 25
2. 50
3. 100
4. 150
50
1. √3/2
2. 1/2
3. √3/4
4. 1/√3
√3/2
1. circle
2. parabola
3. straight line
4. hyperbola
straight line
1. (1,1)
2. (-1,-1)
3. (2,2)
4. (-2,-2)
(2,2)
1. 1
2. 2
3. 3
4. 4
1
1. x
2. x/2
3. x/3
4. x/4
x/3
1. (-1,3)
2. [-1,3)
3. (-1,3]
4. [-1,3]
(-1,3)
1. f ''
2. f '''
3. f '+f ''
4. f '' + f '''
f '''
1. 1 / (1 + log x)2
2. log x / (1 + log x)2
3. ( log x / 1 + log x )2
4. ( log x )2 / 1 + log x
log x / (1 + log x)<sup>2</sup>
1. -x dy / dx
2. 0
3. x dy / dx
4. x (dy / dx)2
x dy / dx