Page 188 - Math Grade 11 (Basic)

PROEUS DARA

x+2
n. y = l-2x

2. y = x-1
+ 1

ax+b
y=-- (a;=O, ad bc;=O)
cx+d

D=IR-{-1} '1

• t~1t"a : f'(x) = (2x-l)'(x+ l)-(2x-l)(x+ 1)' = 3
2 2
(x + 1 ) (x + 1 )
2 0
• ftHTIHS ttilt15 (x+ 1) >0 mmg x;=-1 &SH f'(x)>O
" f'(x)
~
0
mmg x;=-1 '1

2
lim f(x) = lim x-I = +oo lim (2x-l) = -3
x->(-lf x->(-lf X+ 1 x->(-Jf

lim (x + 1) = o-
x->(-1)
2x-1
f(x) = lim 2x-l = -3
x+l
x->(-1)+

1
2--
__ = 2 lim !=o
x
1 x~ ±oo X
1 +-
X