1. 1/3
2. 1/2
3. 2
4. 3
1/2
1. 0 < x < ∞
2. -∞ < x < 0
3. -∞ < x < ∞
4. 1 < x < 2
1 < x < 2
1. 1.2
2. 1.4
3. 1.6
4. 1.8
1.6
1. 1
2. 2
3. 3
4. 4
1
1. y=3+cex/3
2. y=3+ce-x/3
3. 3y=c+ex/3
4. 3y=c+e-x/3
y=3+ce<sup>-x/3</sup>
1. y+x2+2x+2=cex
2. y+x+2x2+2=cex
3. y+x+x2+2=ce2x
4. y2+x+x2+2=ce2x
y+x<sup>2</sup>+2x+2=ce<sup>x</sup>
1. x2/3+ y2/3=c
2. y2/3-x2/3=c
3. x1/3+y1/3=c
4. y1/3-x1/3=c
y<sup>2/3</sup>-x<sup>2/3</sup>=c
1. (3/4,1]
2. [3/4,1)
3. [3/4,1]
4. (3/4,1)
[3/4,1]
1. 1
2. 1/2
3. 1/3
4. 1/4
1/3
1. 4b/(c+a-b)
2. 4c/(a+b-c)
3. 4b/(c-a-b)
4. 4a/(a+b-c)
4c/(a+b-c)