2
(n+1)
"
2
limn" "n +5-n limn" n2+3
n2+1
n2+2-n
limx0 cos(cos x-1)-1
x
limx0 e3x+e-3x-2
x
a " R
Å„Å‚
1
x
ôÅ‚ 2 + e x < 0
òÅ‚
sin ax
x > 0
f(x) =
x

ôÅ‚ 1
ół
x
limx0- 2 + e x = 0
x
f(x) = xx , x > 0.
2
n +n
limn" (2n+1)!-(2n)! limn" n2-2
(2n+1)!+(2n)! n2+1
"
"
limx" x3 x2 + x4 + 1 - x 2

2
arcsin
x
a b f R
a b f

ax + b x < 1
f(x) =
ln x 1 d" x
f(x) = x ln x, x > 0.