20/10/20 X4
X-4 z0
X-2 lo X> 3
xx-670
74 )A
-1s 2-s1
3
s-1
3
1
y-1-/x-4
A
k-2}(ae)
arc in 2-R) (2
1 X 7 1
-2o
X
-1 (
y-ngx-2) (3
K72
2
6)5 x+2 RR
)
2 l)-2x.x -6 RR
3) 8=
)
R
R*
f(x) =2X+3 : RR, 2x+3
X:
2) x)K+3X-1R+R, (2) : 4 6-1 :{(-5):2515-
YDd13yi)
3 f0- - J:RR, F(o)=0#f):6